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The Papers of Sir Lawrence Bragg 1890-1971


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Reference W.L. BRAGG
Held by Royal Institution of Great Britain
Extent 93 boxes
Conditions of access The archive is open to researchers by appointment and written application should be made to the Librarian, The Royal Institution, 21 Albemarle Street, London W1X 4BS
Box 13 CONFIDENTIAL Nobel Prizes is closed until 2021
Items W.L. BRAGG/34B/130 and W.L. BRAGG/34B/131 are closed
Creators Bragg, Sir, William Lawrence, knight, 1890-1971, physicist and scientist
Arrangement Ninety three boxes of material have been catalogued. Each box is sub-divided into files, which are given an alphabetical reference; most papers have been given an individual reference relating to box, file and item: 1a/1 etc. Most papers have been catalogued individually but some boxes have been listed by file not item, as the content was of a routine nature; for example, the files relating to the Brussels Exhibition (Boxes 82-86). Newspaper cuttings, photographs and a large collection of glass slides have not yet been catalogued. Some recent additions have been made to the archive and these await cataloguing. A name index to the catalogue is in preparation.

Administrative history:
31 March 1890 W.L. Bragg born in Adelaide
1901-1905 attended St Peter's College, Adelaide
1905-1908 Adelaide University: 1st class honours in mathematics
1909-1914 Cambridge University: Trinity College
Part I: 1910 - 1st class honours in mathematics
Part II: 1911 - 1st class honours in physics
1914-1918 War service: sound-ranging: awarded M.C.
1915 Nobel Prize for Physics (with W.H. Bragg)
1919 Cambridge
1919-1937 Langworthy Professor of Physics, Manchester University
May 1921 Fellow of the Royal Society
December 1921 married Alice Hopkinson
1937-1938 Director, National Physical Laboratory
1938-1953 Cavendish Chair of Experimental Physics, Cambridge
January 1941 Knighthood
1953-1966 Fullerian Professor and Director, Royal Institution
1967 Companion of Honour
1 July 1971 died at Waldringfield, Suffolk

Contents:
The Lawrence Bragg archive at The Royal Institution totals over 40,000 items and includes correspondence, lecture notes, reprints, newspaper cuttings and photographs.
Box 1. Speeches and lectures to 1953
Box 2. Speeches and lectures, 1954-July 1960
Box 3. Speeches and lectures, Sept 1960-1966
Box 4. Speeches and lectures, 1967-1968
Box 5. Speeches and lectures, 1969-1971
Box 6a. Civil Service lectures, 1964-1965
Box 6b. Civil Service lectures, Oct-Dec 1965
Box 6c. Civil Service lectures, 1966
Box 6d. Civil Service lectures, 1966: correspondence
Box 6e. Miscellaneous undated lecture notes, ca.1939-53
Box 7. School lecture notes
Box 7a. The nature of light. 1959
Box 7b. The discovery of useful electricity. 1955
Box 7c. Famous experiments at the R.I. 1970
Box 7d. Properties of matter (diamond).
Box 7e. How we hear, speak and see.
Box 7f. Electrical engineering.
Box 7g. Sea waves. 1966-1967
Box 7h. Magnetism. 1959-1968
Box 8. School lecture notes
Box 8a. Waves and vibrations. 1955-62
Box 8b. Waves and vibrations. Correspondence, 1955-62
Box 9. School lecture notes
Box 9a. Atoms and molecules.
Box 9b. Atoms and molecules. Correspondence, 1956
Box 9c. Properties of matter.
Box 9d. Properties of matter. Correspondence, 1956-59
Box 9e. Electricity and magnetism. 1959
Box 10. Honours and appointments
Box 10a. Correspondence, 1936-1938
Box 10b. Certificates of honours and degrees, with correspondence and papers, 1917-1971
Box 10c. Letters of congratulation on appointment as Director of the National Physical Laboratory, April-June 1937
Box 10d. Letters of congratulation on Knighthood, 1941
Box 10e. Letters of congratulation on appointment as Director of the Royal Institution, May 1953
Box 10f. Correspondence concerning decoration of the Order of Leopold, 1961
Box 10g. Correspondence concerning celebrations to mark 50th anniversary of Nobel Prize, Oct 1965
Box 10h. Letters of congratulations on becoming Companion of Honour, January 1967
Box 10i. Election as Corresponding Member of Bayerische Akademie der Wissenschaften and congratulations on 80th birthday, 1970
Box 11. CONFIDENTIAL Royal Institution salaries, contracts, and organisation
Box 12. CONFIDENTIAL James Watson's book
Box 13. CONFIDENTIAL Nobel Prizes Closed until 2021
Box 14. CONFIDENTIAL Private correspondence, references and testimonials, Royal Society Fellowships
Box 15. CONFIDENTIAL Retirement, appointments, R.I. internal affairs, Westgate Covenant, salaries
Box 16. Articles, 1955-1962
Box 17. Articles, 1963-1966
Box 18. Articles, 1967-1969
Box 19a. Visits to the U.S.A., 1925-1935
Box 19b. Articles, 1951-58: correspondence
Box 19c. R.I. administrative correspondence, 1962-65
Box 20a. Letters to J.J.Thomson, 1918-19
Box 20b. Report on Faraday film by S.R.Eade, 1932
Box 20c. Diary of visit to South Africa, 1955
Box 20d. Party to celebrate 50th anniversary of Nobel Prize, Oct 1965
Box 20e. Correspondence about R.J.Seeger's paper on Faraday, March 1966
Box 20f. Rutherford Memorial Lecture, 1958 (Neils Bohr)
Box 20g. Bragg Lecture Fund, 1960-1961
Box 21a. Archival tape recording of Lawrence Bragg: correspondence, 1969-1970
Box 21b. Articles, 1967-1968
Box 21c. Article on X-ray crystallography for Scientific American: correspondence, 1965-1971
Box 21d. Atomic Structure of Minerals: correspondence, 1954-1958
Box 21e. Atomic Structure of Minerals: correspondence, 1959-1967
Box 22a. Bragg Symposium: 80th birthday celebrations. Correspondence, 1968-1971
Box 22b. Introduction to Ideas and Discoveries in Physics, correspondence with Philip Gaskell, 1969
Box 22c. The Development of X-ray Analysis: correspondence with Basic Books Inc., 1968-71
Box 22d. Ideas and Discoveries in Physics: correspondence with Longmans Green & Co. Ltd., 1968-1971
Box 23a. B.B.C. correspondence, 1954-1960
Box 23b. Television programme, 50 Years a Winner, 2 Dec 1965: chiefly letters of congratulation
Box 24a. Letters of congratulation from Bragg, 1954-69
Box 24b. Contemporary Physics: correspondence concerning the editorial board and publications
Box 25a. "Cranks": correspondence, 1954-1968
Box 25b. The Crystalline State: correspondence, 1962-71
Box 25c. Czechoslovakian visit, 1969
Box 26a. Disposal of scientific books and journals, 1962-1971
Box 26b. Distribution of reprints, 1967-1969
Box 26c. R.I.'s Library of Science: correspondence with Elsevier Publishing Co., 1966-1971
Box 27a. Field Survey Association: correspondence, 1948-1971
Box 27b. Sound Ranging in the 1914-18 War. Sept 1966
Box 27c. Bubble model film. Correspondence with the Macqueen Film Organisation Ltd and with W.M. Lomer, 1954-1971
Box 28a. Films: general correspondence, 1966-1971
Box 28b. The Nature of Things: film scripts, 1959, and correspondence, 1966-1968
Box 29a. Imperial Defence College: correspondence about scientific lectures, 1965-1968
Box 29b. Institute of Physics and the Physical Society: general correspondence, 1966-1969
Box 29c. Institute of Physics: X-ray analysis group. Correspondence, 1959-1970
Box 29d. International Union of Crystallography: correspondence, 1956-1970
Box 30a. Invitations to dinners etc, declined, 1967-71
Box 30b. Invitations to lecture, 1968-1971
Box 30c. Invitations to lecture/write articles, declined, 1966-1971
Box 31a. Lee-Hemming Fellowship Fund: correspondence, 1967-1968
Box 31b. Lucretian Club: correspondence, 1955-1959
Box 31c. Macqueen Film Organisation Ltd: correspondence about films of school lectures, 1965-1967
Box 31d. Medical Research Council: correspondence, 1966-1970
Box 31e. Miscellaneous correspondence with publishers and societies, 1968-1969
Box 31f. Miscellaneous correspondence, 1969-1971
Box 32a. National Gallery, Honorary Scientific Advisory Committee: papers, 1955-1970
Box 32b. New Knowledge: correspondence about articles for the journal, 1965-1966
Box 32c. "Nice letters to keep", 1963-1968
Box 32d. Nobel Prize: 50th anniversary. Correspondence, 1964-1966
Box 32e. Nobel Prize: awards to Max Perutz, John Kendrew, F.H.C.Crick, James Watson, and Maurice Wilkins, 1962-1963
Box 32f. Nobel meeting at Lindau, 1971: correspondence 1970-1971
Box 32g. Obituaries, 1961-1971
Box 33a. Lists of publications, 1913-1969
Box 33b. Press: correspondence and cuttings, 1955-1968
Box 33c. Requests for reprints, 1958-1964
Box 33d. Research: correspondence, 1953-1971
Box 34a. Reviews, 1947-1970
Box 34b. Royal Institution, 1966-1971
Box 34c. Royal Society, 1962-1971: correspondence
Box 34d. Royal Society Club, 1957-1970
Box 35a. Royal Society Soirées, 1965-1968
Box 35b. Schools Science and Technology Committee, 1969
Box 35c. Solvay Physics Conferences, 1933, 1962-1970
Box 35d. Trinity College, Cambridge: correspondence, 1951-1971
Box 35e. Visitors from overseas, 1954-1962
Box 36. Card index to old files
Box 37A. CONFIDENTIAL Family correspondence, 1888-1915
Box 37B. CONFIDENTIAL Family correspondence, 1915-1941
Box 38a. Appointments: correspondence, 1954-1962
Box 38b. The art of lecturing: correspondence, 1959-60; with articles and reports about preparation of papers, 1939-1956
Box 38c. Requests for articles, 1959-1967
Box 39a. American Association of Physics Teachers: lecture demonstrations, 1962-1963
Box 39b. Adventures in the mind: what is life made of? Saturday Evening Post article; correspondence 1960-1961
Box 39c. Bomb detector: correspondence, 1940-1947
Box 39d. CONFIDENTIAL: A.J.Bradley correspondence, 1938-1963
Box 40a. Broadcasts: correspondence, 1938-1940
Box 40b. Broadcasts: scripts and correspondence, 1947-53
Box 41a. Canadian liaison: correspondence and reports, 1940-Sept 1941
Box 41b. Canadian liaison: correspondence, Oct 1941-Jan 1946
Box 42a. Communicated papers: acknowledgements and correspondence, 1951-1963
Box 42b. Letters of congratulation on appointment as Cavendish Professor of Physics, 1938
Box 42c. Letters of congratulation on appointment as Cavendish Professor of Physics, 1938
Box 43a. The Crystalline State: correspondence with G.Bell & Sons Ltd, 1929
Box 43b. X-rays and Crystal Structure and The Crystalline State. Vols 1-3: correspondence, 1921-1937
Box 43c. Electricity: correspondence, 1934-1937
Box 43d. The Atomic Structure of Minerals, Cornell University Press: correspondence, 1935-1937
Box 44a. English-speaking Union of the Commonwealth: general correspondence, 1954-1968
Box 44b. English-speaking Union of the Commonwealth: correspondence about Universities' Advisory Committee, 1955-1966
Box 44c. P.P.Ewald: correspondence, 1959-1962
Box 44d. Films, The Nature of Things: correspondence with SEDICT, 1957
Box 44e. Funds for physicists: correspondence with Lord Cherwell, 1954-1957
Box 44f. Gemmological Association of Great Britain: correspondence and papers, 1954-1967
Box 45a. Invitations to speak, accepted, 1947-1950
Box 45b. Invitations, 1951-1953
Box 46a. Higher Technical Education Committee (Percy Committee), 1943-1947
Box 46b. Hospital expenses, 1962
Box 46c. I.T.V.: proposed broadcasts, 1959-1964
Box 46d. Institute of Physics: correspondence, 1959-65
Box 47a. Institution of Royal Engineers: Selection Committee for Gold Medal, 1963-1964
Box 47b. International Crystal Structure Tables: correspondence, 1932-1952
Box 47c. Invitations to lecture, 1965-1968
Box 48a. Invitations declined, 1964-1968
Box 48b. R.W.James: obituaries, 1964-1966
Box 48c. Lawes Agricultural Trust: minutes, papers and correspondence, 1953-1965
Box 49a. Lightning conductors: correspondence, 1959
Box 49b. Miscellaneous correspondence, 1942-1945
Box 49c. Miscellaneous correspondence, 1945-1946
Box 50a. Miscellaneous correspondence, 1947-1949
Box 50b. Miscellaneous correspondence, 1950-1954
Box 51a. Miscellaneous correspondence, 1955-1956
Box 51b. Miscellaneous correspondence, 1957-1958
Box 52a. Miscellaneous correspondence, 1959-1961
Box 52b. Miscellaneous correspondence, 1961-1964
Box 53a. Miscellaneous correspondence, 1964-1965
Box 53b. Miscellaneous correspondence, 1965-1966
Box 54a. Miscellaneous correspondence, 1966-1968
Box 54b. Nuffield Science Teaching Project, 1963-1965
Box 54c. Ray Pepinsky: revision of Groth's Chemische Krystallographie, 1957
Box 55a. Pepinsky machine: correspondence, 1950-1951
Box 55b. Pergamon Press: correspondence, 1957-1963
Box 55c. Philosophical Magazine: correspondence, 1941-69
Box 55d. Physical Society: minutes, correspondence, programmes, 1957-1960
Box 55e. Pilkington Commission on Broadcasting: correspondence, 1961
Box 55f. Derek J. da Solla Price: correspondence, 1954-1965
Box 56a. Personal correspondence, 1944-1951
Box 56b. Personal correspondence, 1947-1956
Box 57a. Personal correspondence, 1957-1959
Box 57b. Personal correspondence, 1959-1961
Box 57c. Personal correspondence, 1962-1966
Box 58a. References and testimonials, 1925-1938
Box 58b. References and testimonials, 1938-1946
Box 59a. References and testimonials, 1946-1953
Box 59b. References and testimonials, 1954-1958
Box 59c. J.A.Darbyshire: correspondence, 1932
Box 60a. Reviews, 1933-1937
Box 60b. Reviews, 1937-1946
Box 61a. Royal Institution Appeal, 1966-1968
Box 61b. Royal Institution lectures: correspondence and texts, 1942-1954
Box 62a. R.I. lectures: correspondence, 1938-1946
Box 62b. R.I. lectures: correspondence, 1947-1952
Box 62c. R.I. lectures: texts, 1952-1954
Box 63a. R.I. lectures: notes, 1952-1953
Box 63b. Lectures and speeches: notes, 1950
Box 63c. Royal Photographic Society: correspondence about Lucien Bull, 1955
Box 63d. Royal Society Tercentenary: correspondence, minutes and related papers, 1957-1961
Box 64a. Royal Society Tercentenary, 1960: programmes, brochures, press cuttings
Box 64b. Solvay Conferences: correspondence, 1959-1961
Box 65a. Field Survey Association (sound ranging): correspondence, minutes, reports, 1919-May 1939
Box 65b. Field Survey Association: correspondence, minutes, reports, June 1939-May 1940
Box 66a. Sound ranging: correspondence and reports 1940-1941
Box 66b. Sound ranging: reports, correspondence, and minutes, 1946
Box 67a. B. B. C.: correspondence about The nature of things, 1959-1960
Box 67b. Fan letters in connection with television series, The nature of things, 1959-1965
Box 67c. Understanding Science: correspondence about the magazine, 1962-1968
Box 67d. London International Youth Science Fortnight and the London Science Club: correspondence, 1964-1968
Box 68. Overseas visits: correspondence and souvenirs
Box 68a. Portugal, 1945
Box 68b. South Africa, 1952
Box 68c. South Africa, 1955
Box 68d. Spain, 1933
Box 68e. Spain, 1957
Box 69. Overseas visits: correspondence and souvenirs
Box 69a. U.S.A. and Canada, 1948
Box 69b. U.S.A., 1950
Box 69c. U.S.A. (proposed), 1963-1966
Box 69d. U.S.A. and Canada, 1966-1967
Box 69e. Australia, 1960
Box 69f. Belgium and Holland, 1945
Box 69g. Canada, 1941
Box 69h. France, 1945
Box 69i. Berlin, November 1937
Box 69j. Cologne, June 1938
Box 69k. Munich, July 1962
Box 69l. Berlin, 1966
Box 69m. Berlin, 1967
Box 69n. Germany, 1965 (proposed) and 1968
Box 69o. India and Ceylon, 1960
Box 69p. India, 1963-1964
Box 69q. New Zealand, 1960
Box 70. Overseas visits: correspondence and souvenirs
Box 70a. Sweden, 1943
Box 70b. Sweden, 1943: report
Box 70c. Sweden, 1947
Box 70d. Switzerland, 1950 and 1952 (proposed)
Box 71. Research notes: bi-refringence
Box 72. Research notes: X-ray optics
Box 73. Research notes and reprints: silicates
Box 74. Notes for lectures, 1927-1936, with some reprints and correspondence
Box 75a. Alloys: notes and correspondence, 1933-1934
Box 75b. Alloys: notes and correspondence, 1933-1935
Box 76. Order-Disorder: notes and reprints, 1930s, with letter from G.Borelius, 1936
Box 77. Research correspondence
Ox 77a. 1919-1920
Box 77b. 1921-1922
Box 77c. 1928-1929
Box 77d. 1930
Box 77e. 1931
Box 77f. 1932
Box 77g. 1933
Box 77h. 1934
Box 77i. 1935
Box 77j. 1936
Box 77k. 1937
Box 77l. 1937-1938
Box 77m. 1938-1939
Box 78. Research correspondence
Box 78a. 1939-1941
Box 78b. 1942-1946
Box 79. Research correspondence
Box 79a. 1947-1950
Box 79b. 1951-1953
Box 80. Desk diaries, 1966-1970
Box 81. Pocket diaries, 1951-1971
Box 82. International Exhibition, Brussels, 1958: pamphlets, catalogue, explanatory and descriptive material, correspondence, 1957-59
Box 83. International Exhibition, Brussels, 1958
Box 83a. British National Days, July 1958
Box 83b. Science Museum: correspondence, 1958-1959
Box 83c. Correspondence with Brussels organisers, 1956-1957
Box 83d. Opening of Exhibition: lists, invitations, correspondence
Box 83e. Exhibits: correspondence, 1958-1959
Box 83f. Advisory Committee: minutes and reports, 1955-1958
Box 83g. British Pavilion: correspondence, minutes, and plans, 1956-1959
Box 83h. Pall Mall Deposit & Forwarding Co.: correspondence, 1957-1959
Box 83i. British Council: correspondence about shipping and disposal of British exhibits, 1956-1959
Box 83. International Exhibition, Brussels, 1958
Box 83j. Exhibits: correspondence, 1957-1958
Box 83k. Exhibits: correspondence, 1957-1958
Box 83l. The Molecule exhibit: correspondence and notes, 1956-1958
Box 83m. British Council: correspondence about expenses, 1956-1958
Box 83n. Exhibition films: correspondence, 1957-1959
Box 83o. The Atom exhibit: correspondence, notes and plans, 1956-1958
Box 83p. The Living Cell exhibit: correspondence and notes, 1956-1957
Box 83q. Draft catalogues
Box 83r. The Crystal exhibit: correspondence and notes, 1956-1958
Box 84. International Exhibition, Brussels, 1958
Box 84a. British exhibits: correspondence, 1956-1958
Box 84b. Miscellaneous papers, 1956-1958
Box 84c. Exhibits: forms and regulations
Box 84d. Exhibits: notes, 1957
Box 84e. D.C.Phillips: accounts, 1956-1958
Box 85. International Exhibition, Brussels, 1958
Box 85a. Exhibits: correspondence, 1956-1958
Box 85b. Exhibits: correspondence, 1956-1958
Box 86. International Exhibition, Brussels, 1958: letters (1914), photographs and papers
Box 87. CLOSED ACCESS Lawrence Bragg's autobiography
Box 88. Royal Institution: administrative files
Box 88a. Open Days, 1960 and 1961
Box 88b. Cornice restoration: correspondence, 1958-59
Box 88c. U.S.A. National Science Foundation: correspondence about schools lectures, 1958
Box 88d. Appeal to electrical firms, 1959
Box 88e. Discourses: applications for tickets, 1962-5
Box 88f. Corporate Subscribers, 1955-1958
Box 88g. Corporate Subscribers, 1955-1959
Box 88h. Corporate Subscriber: resignation, 1958
Box 88i. Covenants and donations, 1955-1964
Box 88j. Library reorganisation, 1958-1960
Box 88k. Appeal to City Companies, 1958-1959
Box 88l. General correspondence, 1954-1960
Box 88m. Davy Faraday Research Laboratory: general research correspondence, 1956-1965
Box 88. Royal Institution: administrative files
Box 88n. Davy Faraday Research Laboratory: general correspondence, 1954-1965
Box 88o. Davy Faraday Computing Service: correspondence, 1955-1963
Box 88p. Davy Faraday Research Laboratory: application for grant from British Empire Cancer Campaign, 1957-1962
Box 88q. Davy Faraday Research Laboratory: application for grant from D.S.I.R., 1960
Box 88r. Electrical Research Association: correspondence, 1955
Box 88s. Davy Faraday Research Laboratory: finance, 1954-1961
Box 88t. Ronald King: correspondence and papers, 1953-1963
Box 88u. Davy-Faraday Research Laboratory: part-time laboratory assistants, 1958-1959
Box 88v. Davy Faraday Research Laboratory: registration of research workers as Ph.D. students, 1956-9
Box 88w. W.A.Coates: correspondence, 1957
Box 88x. Assistant to Professor King: correspondence, 1959-1960
Box 88y. G.D.Kissell: correspondence, 1957-1958
Box 88z. R.I. lecture assistant: correspondence, 1957-1958
Box 88aa. L.Walden, lecture assistant: correspondence, 1957
Box 88ab. H.R.H. Duke of Edinburgh: correspondence about visit, 1956-1958
Box 88ac. Special Committee minutes and correspondence, 1955
Box 88ad. Appeal: correspondence, 1956-1959
Box 88ae. Closed circuit television for lecture theatre: correspondence, 1959-1962
Box 88af. Secretary: correspondence, 1958
Box 88ag. Pye lunch: correspondence, 1956-1957
Box 89. Royal Institution: administrative files
Box 89a. Committee of Accounts: minutes, 1954-1956
Box 89b. Development Committee & Building Committee: minutes and papers to December 1963
Box 89c. Davy Faraday Laboratory Committee: minutes, 1956-1960
Box 89d. Managers: minutes and papers, 1958-1959
Box 89e. Managers: minutes and papers, 1960-1961
Box 89f. Managers: minutes and papers, 1962-1964
Box 90. Royal Institution: administrative files
Box 90a. Science for Arts Graduates, 1959
Box 90b. School science lectures: ticket applications, 1959-1961
Box 90c. School science lectures: correspondence with Education Officers, 1954-1963
Box 90d. School science lectures: lists of schools receiving tickets, 1958-1959
Box 90e. School science lectures: astronomy, biology: correspondence, 1957-1958
Box 90f. School science lectures: extension to other centresm, 1957-1958
Box 90g. School science lectures: extension to other centres - Bristol, 1958-1959
Box 90h. School science lectures: extension to other centres - Manchester, 1958
Box 90i. School science lectures: extension to other centres - Newcastle, 1957-1961
Box 90j. School science lectures: extension to other centres - Sheffield, 1959-1960
Box 90k. School science lectures: ticket applications 1961-1964
Box 90l. Afternoon lectures: A.C.Menzies, Optical methods in manufacture and testing, 1956
Box 90m. Afternoon lectures: R.H.Macmillan, Automatic control, 1955
Box 90n. Ticket applications from teachers' training colleges, 1959-1962
Box 90o. School science lectures, sponsors: Goldsmiths' Company, 1958-1960
Box 90p. School science lectures: correspondence with Science Museum, 1954-1957
Box 90q. School science lectures: sponsors, 1958-1959
Box 90r. School science lectures, sponsors: Bell Telephone Laboratories, 1958
Box 90s. Science teachers: vacation courses, 1955-57
Box 90t. School Speech Days: invitations to speak, accepted, 1955-1964
Box 90u. School Speech Days: invitations to speak, declined, 1954-1965
Box 90v. Land experiments on colour vision, 1961
Box 90w. IPEX lecture, 26 July 1963
Box 90x. Afternoon lectures: correspondence, 1953-56
Box 90y. British Association for Commercial and Industrial Education: meeting, 31 May 1961
Box 90z. Admiralty course at R.I., 1957
Box 90aa. G.E.C. educational booklets
Box 90. Royal Institution: administrative files
Box 90ab. School science: Ministry of Education correspondence, 1954-1959
Box 90ac. Science teachers: refresher courses, 1955-58
Box 91. Royal Institution: administrative files
Box 91a. Christmas lectures, 1954: Sir Frank Whittle
Box 91b. Christmas lectures, 1955: H.W.Melville
Box 91c. Christmas lectures, 1956: H.Baines
Box 91d. Christmas lectures, 1957-58: Julian Huxley and James Fisher
Box 91e. Christmas lectures, 1958-59: International Geophysical Year
Box 91f. Christmas lectures, 1959-60: T.E.Allibone
Box 91g. Christmas lectures, 1961-62: Lawrence Bragg
Box 91h. Christmas lectures, 1962-63: R.E.D.Bishop
Box 91i. Christmas lectures on electricity, 1961-62
Box 91j. Corporate subscribers
Box 91k. Davy Faraday Research Laboratory: personnel
Box 91l. National Research Development Corporation, 1955-1960
Box 91m. Nuffield Foundation, 1954-1962
Box 91n. Personnel: general correspondence, 1954-1962
Box 91o. Recruitment of personnel for protein work, 1960
Box 91p. Examination of poliomyelitis virus by Dr Klug, 1958
Box 91q. Research Fund, 1953-1963
Box 91r. Davy Faraday Research Laboratory: salaries
Box 91s. Carbon dating, 1954-1957
Box 91t. Colloquium on proteins, 1960
Box 92. Reprints, 1919-1970
Box 93. R.I.Friday Evening Discourses: correspondence with lecturers, 1954-1967



R.I. lectures: correspondence  W.L. BRAGG/62B  1947-1952

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/1  10 Jan. 1947

Contents:
[Cambridge] ¼ page, typescript
In programme there is a mistake in title of his lectures. It should be Co-operative Phenomena.

C.Sykes to Lawrence Bragg  W.L. BRAGG/62B/2  16 Jan. 1947

Contents:
Sheffield 1/3 page, typescript
Regrets he cannot send Bragg samples of copper-gold wires. The material was returned to Mond Nickel for reclamation. Could let Bragg have model using coloured bulbs, showing the order-disorder lattice. Will arrange visit to Cambridge.

[Lawrence Bragg] to C.Sykes  W.L. BRAGG/62B/3  18 Jan. 1947

Contents:
[Cambridge] ¼ page, typescript
Will try to make some copper-gold wires. Asks if Sukes has any advice about this. Would like to have model using coloured bulbs. Asks if it is possible to make copper-zinc wires of [beta] brass.

C.Sykes to Lawrence Bragg  W.L. BRAGG/62B/4  20 Jan. 1947

Contents:
Sheffield 1/3 page, typescript
Thinks [L.B.] Pfeil of the Mond Nickel Co.Ltd would be able to supply Bragg with copper-gold wires much more easily than Bragg would be able to make them. Production of brass wires should be straight forward. Will look out the model and put it in order.

[Lawrence Bragg] to [L.B.] Pfeil, Mond Nickel Co. Ltd.  W.L. BRAGG/62B/5  24 Jan. 1947

Contents:
[Cambridge] 1/3 page, typescript
In his Royal Institution lectures wants to demonstrate the order-disorder change. Thought of experiment to show changes of resistance with temperature. For this, will need wires of the copper-gold alloy Cu3Au and of [beta]-brass; comments on this. Asks if Pfeil could help.

C.Sykes to Lawrence Bragg  W.L. BRAGG/62B/6  24 Jan. 1947

Contents:
Sheffield ¼ page, typescript
Is enclosing note about the crystal structure model. Asks where he should send model.
With enclosure: ½ page, typescript W.L. BRAGG/62B/7

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/8  27 Jan. 1947

Contents:
London ¼ page, typescript
Asks if Bragg will give evening discourse on 25 April, 2 or 9 May. Asks for title of discourse.

[Miss M.Smith] Sec. to Lawrence Bragg to D.R.Rideal, Roual Institution  W.L. BRAGG/62B/9  28 Jan. 1947

Contents:
[Cambridge] ¼ page, typescript
Sir Lawrence will give discourse on 9 May on "working models of crystals".

[Lawrence Bragg] to D.A.Oliver  W.L. BRAGG/62B/10  28 Jan. 1947

Contents:
[Cambridge] 1¼ pages, typescript
Discusses plans for his series of Royal Institution lectures on "Co-operative Phenomena" and experiment to show magnetic properties. Asks if Oliver knows of interesting magnetic materials they could get in the form of a wire to put in the solenoid to display effects; comments on this. Is showing the Bachhauser effect. Asks what would be the best material to use to show this.

L.B.Pfeil to Lawrence Bragg  W.L. BRAGG/62B/11  6 Feb. 1947

Contents:
Mond Nickel Co. Ltd, London ¼ page, typescript
They are preparing a length of copper-gold alloy wire for Bragg. Beta brass wire is not amenable to cold working operations. Dr Alkins will look into the possibility of producing fine enough material by hot working and will write to Bragg.

[Lawrence Bragg] to L.B.Pfeil  W.L. BRAGG/62B/12  10 Feb. 1947

Contents:
[Cambridge] ¼ page, typescript
Thanks Pfeil for help with Royal Institution lecture. Asks if any of Pfeil's colleagues would like to attend the lecture.

[Lawrence Bragg] to C.Sykes  W.L. BRAGG/62B/13  10 Feb. 1947

Contents:
[Cambridge] ¼ page, typescript
Asks Sykes to send model to the Royal Institution. His first lecture is on 6 March.

[Lawrence Bragg] to N.P.Allen  W.L. BRAGG/62B/14  18 Feb. 1947

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his R.I. lectures on "Co-operative Phenomena"; comments on lectures.
Similar letters to G.L.Bailey and Charles Goodeve; W.L. BRAGG/62B/15 & W.L. BRAGG/62B/16

Thomas Bolton & Sons Ltd (W.Cartwright) to Lawrence Bragg  W.L. BRAGG/62B/17  14 Feb. 1947

Contents:
Stoke-on-Trent ¼ page, typescript
[L.B.] Pfeil told them Bragg wanted a sample of beta brass in order to demonstrate the order-disorder change. Size 0.5mm is too small but is sending sample which he hopes will be satisfactory.

L.B.Pfeil to Lawrence Bragg  W.L. BRAGG/62B/18  14 Feb. 1947

Contents:
Mond Nickel Co.Ltd, London 1¼ pp., typed
Comments on sample of copper-gold alloy he is sending and discusses the technique used to make it; this had to be improvised because of the absence of electric power. Hopes Dr Alkins has been able to provide a sample of beta brass. Would like two tickets for discourse.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/19  15 Feb. 1947

Contents:
London ¼ page, typescript
Lecture list goes to press in 10 days. Will include Bragg's discourse of 9 May under the title Working models of crystals.

[Lawrence Bragg] to L.B.Pfeil  W.L. BRAGG/62B/20  15 Feb. 1947

Contents:
Cambridge ½ page, typescript
Asks if Pfeil has been able to get copper-gold alloy wire. Will understand if power cuts have made it difficult to do this. Could postpone experiment until his second lecture on 13 March.

[Lawrence Bragg] to L.B.Pfeil  W.L. BRAGG/62B/20a  [?] Feb. 1947

Contents:
Cambridge ¾p, typescript
Thanks Pfeil for copper-gold wire. Intrigued by photograph of its manufacture. Will have slide made of it for order-disorder lecture. Boltons are sending beta-brass wire.

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/21  [?] Feb. 1947

Contents:
Cambridge ½ page, typescript
L.B.Pfeil of Mond Nickel Co. has provided him with a sample of copper-gold wire, which shows the order-disorder change, and Dr Alkins and Thomas Bolton & Sons has provided a sample of beta-brass. Asks if Martin would send two sets of tickets to Pfeil and one set to Alkins.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/22  27 Feb. 1947

Contents:
¼ page, typescript
Has sent tickets to [L.B.] Pfeil and Dr Alkins. Is enclosing some for Bragg's own use. Will be pleased to discuss the F.S.S.U. question with Bragg on 6 March.

[Lawrence Bragg] to G.W.Austin  W.L. BRAGG/62B/23  3 March 1947

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lecture on Co-operative Phenomena.

[Lawrence Bragg] to W.Cartwright, Thomas Bolton & Sons Ltd.  W.L. BRAGG/62B/24  3 March 1947

Contents:
[Cambridge] ½ page, typescript
Thanks him for sample of beta brass. Did not realize how difficult it was to produce the fine gauge. Should be able to do experiment to show change of resistance at the order-disorder change point with the thick sample. Thanks Cartwright for his help. Has tickets for the lectures if Cartwright would like some.

[Lawrence Bragg] to N.P.Allen  W.L. BRAGG/62B/25  24 April 1947

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lecture on 9 May at which he will talk about the bubble model of metals and its general behaviour.
Similar letters to G.L.Bailey, Charles Goodeve and S.Whitehead: W.L. BRAGG/62B/26-28.

N.Allen to Lawrence Bragg  W.L. BRAGG/62B/29  25 April 1947

Contents:
Teddington ¼ page, typescript
Thanks Bragg for tickets to lecture on 9 May. Enjoyed lectures on Co-operative Phenomena but was not able to attend them all. Asks if these lectures will be published.

[Lawrence Bragg] to N.Allen  W.L. BRAGG/62B/30  28 April 1947

Contents:
[Cambridge] ¼ page, typescript
Lectures on Co-operative Phenomena will not be published. Pleased Allen enjoyed them.

E.N.da C.Andrade to Lawrence Bragg  W.L. BRAGG/62B/31  12 May 1947

Contents:
University College London
¼ page, typescript
Greatly enjoyed Bragg's lecture about the bubble model. Asks if the film is available from Kodak. Would like to select pieces of film to make slides to illustrate lectures on slip in metals.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/32  9 June 1947

Contents:
[Cambridge] ½ page, typescript
Is returning proofs of his discourse. They have been so carelessl printed it would be wise to have a second proof. Gives details of errors. Is going to Sweden for a month. Asks Cory to send corrected proofs to his secretary.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/33  10 Nov. 1947

Contents:
London ¼ page, typescript
Asks if Bragg could give an evening discourse on 19 March and a course of lectures on 4, 11 and 18 March.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/34  12 Nov. 1947

Contents:
[Cambridge] 1/3 page, typescript
Can lecture on dates Rideal suggested. Usually gives course of four lectures but would be pleased if he need only give three. Plans to give course on work being done at the Cavendish Laboratory; comments on this. Will think of a subject for his evening discourse.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/35  13 Nov. 1947

Contents:
London ¼ page, typescript
Asks if Bragg could give series of four lectures on Tuesdays from 20 January to 10 February inclusive; comments on this. Subject Bragg suggested would be suitable. The number of Honour students attending the courses is growing rapidly.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/36  18 Nov. 1947

Contents:
[Cambridge] ½ page, typescript
Would prefer to stick to the March dates which Rideal first suggested for lectures. Could not lecture on 10 February as he has to be in Glasgow that day. It would be giving his people short notice if they had to prepare demonstrations for lectures immediately after the Christmas vacation.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/37  21 Nov. 1947

Contents:
London ¼ page, typescript
Confirms 4, 11, 18 and 19 March for Bragg's lectures.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/38  28 Nov. 1947

Contents:
London ¼ page, typescript
Asks for titles of Bragg's discourse and course of lectures.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/39  1 Dec. 1947

Contents:
[Cambridge] ¼ page, typescript
His series of lectures will be entitled Current research work in the Cavendish Laboratory and his discourse will be entitled Metal Physics.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/40  30 Jan. 1948

Contents:
London ¼ page, typescript
Is sending cards to [J.] Kendrew for [Linus] Pauling's discourse. Bragg, as a member, can sign two tickets for any Friday evening.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/41  9 Feb. 1948

Contents:
London 2/3 page, typescript
The Officers have asked him to write about Bragg's evening lecture on 19 March. The Federation of British Industries is to hold a meeting that day in honour of the Nobel Laureates and the theatre is not likely to be free until 6 o'clock. Bragg may wish to take part in the meeting. Asks if Bragg would like to postpone his lecture until the autumn; comments on this. If Bragg decides not to lecture on 19 March, will show new film on atomic physics instead.

Royal Institution (Ralph Cory) to Miss Smith, Secretary to Lawrence Bragg  W.L. BRAGG/62B/42  10 Feb. 1948

Contents:
London 1/3 page, typescript
Is sending revised proof of Sir Lawrence's recent discourse; comments on this. Would like an abstract of Sir Lawrence's discourse, Working models of crystals, given on 9 May 1947, as soon as convenient.

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/43  12 Feb. 1948

Contents:
[Cambridge] ¼ page, typescript
Will be pleased to postpone his evening lecture until the autumn. It will be more convenient to arrange the demonstration for the lecture if the lecture room is available well beforehand. Is pleased to be able to go to the dinner of the Federation of British Industries.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/44  16 Feb. 1948

Contents:
[Cambridge] ½ page, typescript
Is returning proof of his discourse. Asks if it would be possible to add names of authors from whose papers he has drawn the figures. Is enclosing list of names. Asks if Cory wants an article based on the discourse given on 9 May 1947 or an abstract.
With list: ¼ page, typescript; W.L. BRAGG/W.L. BRAGG/62B/45

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/46  16 Feb. 1948

Contents:
London ¼ page, typescript
Is enclosing tickets to admit Bragg's friends to his course of afternoon lectures.

[Lawrence Bragg] to F.Brundrett  W.L. BRAGG/62B/47  17 Feb. 1948

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his course of lectures on Current research work in the Cavendish Laboratory. Lectures will deal with the organisation of research.
Similar letters, 17 Feb., to William Larke and A.J.Philpot; W.L. BRAGG/62B48-49.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/50  18 Feb. 1948

Contents:
London ¼ page, typescript
Thanks Bragg for returning proof of discourse. Will insert names of authors responsible for the figures. Would like article of 2-3,000 words on discourse of 9 May 1947.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/51  25 Feb. 1948

Contents:
[Cambridge] ½ page, typescript
Is enclosing paper, Working models of crystals, and reprint of Royal Society paper from which the illustrations are drawn. Comments on figures.
With text of paper; 6½ pages, typescript; W.L. BRAGG/62B/52

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/53  27 Feb. 1948

Contents:
London 1/3 page, typescript
Noticed Bragg is giving course of Royal Institution lectures on research in the Cavendish Laboratory and a discourse on metal physics. If Bragg felt inclined to send anything about these lectures, would be pleased to have it.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/54  28 Feb. 1948

Contents:
[Cambridge] 1/3 page, typescript
Will try to write note on his first lecture which deals with the organisation of the Cavendish Laboratory; comments on this.

[Lawrence Bragg] to H.M.Taylor  W.L. BRAGG/62B/55  28 Feb. 1948

Contents:
[Cambridge] 1/3 page, typescript
Is to give course of Royal Institution lectures on the organisation and research of the Cavendish Laboratory. Nature has asked for article on the lectures and he thought he would write about organisation. Would like to give figures if the University has no objection. Asks if Taylor would like to see the article before it is sent off.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/56  9 March 1948

Contents:
London 1/3 page, typescript
Hopes that although arrangements for Bragg's lecture have been altered, [E.] Orowan will be able to help with an exhibit on 19 March. Thinks the atomic physics film will attract a large audience. Would like to have an interesting exhibit in the library.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/57  12 March 1948

Contents:
[Cambridge] 1/3 page, typescript
He and [Thomas] Martin think it would be better if [E.] Orowan's exhibit were shown when he, Bragg, gives his postponed lecture. He and Orowan assumed exhibit would also be postponed and it would be difficult for Orowan to prepare it by 19 March.

[Lawrence Bragg] to H.M.Taylor  W.L. BRAGG/62B/58  18 March 1948

Contents:
[Cambridge] ¼ page, typescript
Is enclosing copy of note on the organisation and work of the Cavendish Laboratory; is sending note to Nature.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/59  18 March 1948

Contents:
[Cambridge] ¼ page, typescript
Is enclosing note on the organisation and work of the Cavendish Laboratory, a summary of his three Royal Institution lectures.
With text: Current researches in the Cavendish Laboratory; 11½ pages, typescript & MS; W.L. BRAGG/62B/60

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/61  4 May 1948

Contents:
London ¼ page, typescript
Asks if Bragg could give evening discourse on 29 October.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/62  5 May 1948

Contents:
[Cambridge] ¼ page, typescript
Cannot give lecture on 29 October as he will be leaving for America at end of October. Could give lecture in mid-October; comments on this.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/63  8 May 1948

Contents:
London ¼ page, typescript
First lecture of session is on 29 October. Asks if Bragg would give the lecture on 10 December.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/64  10 May 1948

Contents:
[Cambridge] 1/3 page, typescript
When his lecture was postponed, did not know visit to America would make it impossible for him to give the lecture in autumn term. Will not return until 15 December. Asks if he should give lecture early in the New Year.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/65  30 July 1948

Contents:
[Cambridge] ½ page, typescript
Is returning proof; comments on this.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/66  11 Nov. 1948

Contents:
London ¼ page, typescript
Asks if Bragg could give course of lectures on Thursdays, 17 March to 7 April inclusive.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/67  6 Dec. 1948

Contents:
[Cambridge] ½ page, typescript
Has just returned from America. Will give talks on dates Rideal suggested, although he will have to give a couple in his Easter holiday. Will give the four talks on the physics of the solid state. Suggests he give an evening lecture on science and technology; comments on this and asks what date Rideal proposes for the lecture.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/68  8 Dec. 1948

Contents:
London 1/3 page, typescript
Thinks The physics of the solid state would be a good title for lectures. Evening lecture will be after Easter. Will make not of title Science and technology. Managers and members like the professors to give discourses with experiments. Doubts whether Bragg could devise experiments for lecture on that subject. Hopes Lady Bragg has recovered from their bad trip.

[Lawrence Bragg] to E.K.Rideal, Royal Institution  W.L. BRAGG/62B/69  9 Dec. 1948

Contents:
[Cambridge] ½ page, typescript
Will think again about evening lecture. Once before he gave a non-experimental one. Thought it would opportunity to say something he wanted to get off his chest, but if he thinks of a good subject for an experimental lecture will adopt it. He and his wife enjoyed visit to USA where they both gave lectures.

[Lawrence Bragg] to C.S.Smith  W.L. BRAGG/62B/70  3 Jan. 1949

Contents:
[Cambridge] ½ page, typescript
Is giving series of Royal Institution lectures on metal physics. Asks for collection of the latest papers from Smith's laboratory. Was interested in the work Smith showed him in Chicago and would also like to talk about Smith's work on inter-crystalline surface tension. Comments on his visit to USA and on his return voyage.

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/71  5 Jan. 1949

Contents:
London ¼ page, typescript
Would be pleased to have article for Nature about Bragg's Royal Institution lectures on the physics of the solid state. Hopes Bragg enjoyed visit to USA. Would be pleased to publish notes on his visit.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/72  6 Jan. 1949

Contents:
[Cambridge] ½ page, typescript
Will write up something on his Royal Institution lectures if he can. Is just planning the lectures on the physics of metals. Will try to write something on these or on his evening discourse which will deal with the X-ray analysis of complex organic molecules and macromolecules. Has been asked to open British Association discussion in September on the application of scientific discoveries to technical ends. This was the main thing in which he was interested in the U.S.A. Thinks he must save the material until the British Association meeting.

[Lawrence Bragg] to A.H.Cottrell  W.L. BRAGG/62B/73  25 Jan. 1949

Contents:
[Cambridge] ¼ page, typescript
Is to give four Royal Institution lectures on metal physics; comments on these. Asks for collection of papers from Cottrell's laboratory, particularly Cottrell's own papers on yield phenomena.

A.H.Cottrell to Lawrence Bragg  W.L. BRAGG/62B/74  31 Jan. 1949

Contents:
Birmingham 1/3 page, typescript
Is enclosing copies of their more interesting recent papers, particularly those dealing with the yield phenomenon. Has no reprints yet of paper on the yield of iron.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/75  1 Feb. 1949

Contents:
[Cambridge] ¼ page, typescript
Is enclosing note about his course of lectures on metal physics. Believes Cory wants this for the advertisement.
With note on the content of lectures on The physics of the solid state; 1/3 page, typescript & MS; W.L. BRAGG/62B/76; and more detailed note on the course of lectures; 1½ pages, typescript; W.L. BRAGG/62B/77.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/78  2 Feb. 1949

Contents:
London 1/3 page, typescript
Thanks Bragg for synopsis of course of lectures. They have not resumed practice of printing synopses but will have the synopsis duplicated; comments on this. Bragg has given title Metal Physics. In lecture list, they have printed title The physics of the solid state; thinks they must keep to this.

[Lawrence Bragg] to A.H.Cottrell  W.L. BRAGG/62B/79  3 Feb. 1949

Contents:
[Cambridge] ¼ page, typescript
Thanks Cottrell for papers. Is undertaking the Royal Institution lectures with some trepidation but it is a way of making sure that he learns something about the present state of metal physics

[Lawrence Bragg] to [?W.B.] Shockley  W.L. BRAGG/62B/80  11 March 1949

Contents:
[Cambridge] ¼ page, typescript
Is giving series of Royal Institution lectures on metal physics. Asks if Shockley could send him some photographs of slip bands taken with the electron microscope. Greatly enjoyed his visit to Murray Hill.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/81  [21] Feb. 1949

Contents:
London ¼page, typescript
Asks if Bragg would give evening discourse on 27 April.

[Lawrence Bragg] to B.K.Rideal, Royal Institution  W.L. BRAGG/62B/82  23 Feb. 1949

Contents:
[Cambridge] 1/3 page, typescript
Will give discourse on 27 April. Suggests title Giant molecules; comments on this. Is trying to get on with lectures on Physics of the solid state. Royal Institution lectures make him learn something himself. Says 27 April is a Wednesday not a Friday as usual.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/83  24 Feb. 1949

Contents:
London ¼ page, typescript
Is sending tickets to admit Bragg's friends to his course of lectures.

Royal Institution (Eric K.Rideal) to Lawrence Bragg  W.L. BRAGG/62B/84  24 Feb. 1949

Contents:
London ¼ page, typescript
Acknowledges Bragg's letter saying he will give discourse on 27 April. The Managers thought Wednesday after Easter, instead of Friday, might be a good experiment.

[Lawrence Bragg] to G.L.Bailey  W.L. BRAGG/62B/85  25 Feb. 1949

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lectures on The physics of the solid state.
Similar letter, 25 Feb. 1949, to Charles Goodeve, J.G. Pearce and L.B.Pfeil; W.L. BRAGG/62B/86-88.

[Lawrence Bragg] to W.J.Green, Royal Institution  W.L. BRAGG/62B/89  9 March 1949

Contents:
[Cambridge] 1/3 page, typescript
Wants to do experiment on the strength of rock salt at his lecture on 24 March. Asks if Green still has the collection of rock salt crystals. If so, would like to have a few blocks from which he could cut off material for his lecture and for his work [at Cambridge].

Royal Institution (W.J.Green) to Lawrence [Bragg]  W.L. BRAGG/62B/90  10 March 1949

Contents:
London ¾ page, typescript
Will be pleased to help with pieces of rock salt. Much of the material is flawed but when Bragg comes to give first lecture he can see how much of it is clear enough for his purpose.

S.Tolansky to Lawrence [Bragg]  W.L. BRAGG/62B/91  [ca. 14 March 1949]

Contents:
Englefield Green ½ page, MS
Is enclosing five slides. Two show slip bands on Al crystals and three show contours made by Vickers pyramid indenter on steel.

[Lawrence Bragg] to S.Tolansky  W.L. BRAGG/62B/92  15 March 1949

Contents:
[Cambridge] ¼ page, typescript
Thanks Tolansky for slides. Tolansky has found a fine new technique.

[Lawrence Bragg] to F.C.Frank  W.L. BRAGG/62B/93  4 April 1949

Contents:
[Cambridge] ¼ page, typescript
Thanks Frank for paper, which will be useful for his Royal Institution lectures.

[Lawrence Bragg] to Charles Harington  W.L. BRAGG/62B/94  19 April 1949

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lecture on 27 April on Giant molecules; will describe Cambridge work on protein
Similar letter to Edward Mellanby, 19 April; W.L. BRAGG/62B/95

[Lawrence Bragg] to Charles Harington  W.L. BRAGG/62B/96  23 April 1949

Contents:
[Cambridge] ¼ page, typescript
Some of Harington's colleagues might want to come to lecture on Giant molecules. Is enclosing two tickets.

[Lawrence Bragg] to C.Rimington  W.L. BRAGG/62B/97  23 April 1949

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lecture on protein

[Lawrence Bragg] to [Dorothy] Hodgkin  W.L. BRAGG/62B/98  23 April 1949

Contents:
[Cambridge] ½ page, typescript
Is giving talk at Royal Institution on proteins. Can provide tickets for people from Mrs Hodgkin's department; comments on this.

Dorothy Hodgkin to Lawrence [Bragg]  W.L. BRAGG/62B/99  25 April 1949

Contents:
Oxford ½ page, MS
At least one of her research students would like to attend Bragg's Royal Institution lecture. She may not be able to come. Asks for two tickets.

[Lawrence Bragg] to Thomas Martin, Royal Institution  W.L. BRAGG/62B/100  26 April 1949

Contents:
[Cambridge] 1/3 page, typescript
Courtaulds would like six tickets for discourse. Would be grateful if these could be made available. Good policy to interest Courtauld in the theoretical side of work [on organic molecules].

Nature (A.K.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/101  2 May 1949

Contents:
London 1/3 page, typescript
If Bragg has written up the Royal Institution discourse he delivered on 27 April, would be pleased to consider it for Nature.

[Miss M.Smith] Secretary to Lawrence Bragg, to A.J.V.Gale, Nature  W.L. BRAGG/62B/102  3 May 1949

Contents:
[Cambridge] ¼ page, typescript
Sir Lawrence is writing up his lecture on Giant molecules and will be pleased to sent it to Gale.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/103  12 May 1949

Contents:
[Cambridge] ¼ page, typescript
Is enclosing resume of Royal Institution lecture. Comments on the figures. Asks Gale to return figures in good condition as the Royal Institution will want to use them when the lecture is published.
With text of lecture on Giant molecules: 101/3 pages, typescript; W.L. BRAGG/62B/104.

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/105  17 May 1949

Contents:
London 1/3 page, typescript
Thanks Bragg for account of his Royal Institution lecture. Comments on the figures.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/106  19 May 1949

Contents:
London ¾ page, typescript
Asks Bragg for abstract of discourse on Giant molecules.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/107  23 May 1949

Contents:
[Cambridge] 1/3 page, typescript
Is enclosing summary of discourse on Giant molecules. Hopes it is suitable for the Proceedings. [A.J.V.] Gale has the figures; comments on this.

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/108  24 May 1949

Contents:
London ¼ page, typescript
Is returning, drawings submitted for reproduction in article on Giant molecules. Comments on the figures for the paper.

[Lawrence Bragg] to [R.] Cory, Royal Institution  W.L. BRAGG/62B/109  25 July 1949

Contents:
[Cambridge] ¼ page, typescript
Is returning proof [of article on giant molecules]. Comments on figures.

William Green to Lawrence Bragg  W.L. BRAGG/62B/110  7 Nov. 1949

Contents:
Royal Institution ½ page, MS
Thanks Bragg for his kind remarks at Members' meeting.
With copy of Bragg's remarks, 9 Nov. 1949: 2/3 page, typescript with MS amendments; W.L. BRAGG/62B/111.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/112  11 Nov. 1949

Contents:
London ¼ page, typescript
Asks if Bragg would give course of afternoon lectures on 9, 16, 23 and 30 March. Would like Bragg to give an evening lecture in the same period.

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/113  12 Nov. 1949

Contents:
[Cambridge] ½ page, typescript
Will give lectures on dates Martin suggested. Might go to lecture in Barcelona at Easter. Would therefore like to avoid 1-18 April for evening lecture.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/114  16 Nov. 1949

Contents:
London ¼ page, typescript
Suggests Bragg give evening discourse on 3 March. If this is convenient, would like title ot lecture.

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/115  26 Nov. 1949

Contents:
[Cambridge] ½ page, typescript
Will give evening lecture on 3 March. Suggests he lecture on historical experiments at the Cavendish Laboratory; comments on this.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/116  1 Dec. 1949

Contents:
London 1/3 page, typescript
Asks Bragg for title of course of lectures. Thinks evening lecture on Historical experiments in the Cavendish Laboratory would be very interesting if Bragg could bring some of the original apparatus and repeat the experiments.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/117  2 Dec. 1949

Contents:
London ¼ page, typescript
Sir Harold Spencer Jones would welcome change of dates. He can give discourse on 3 March but cannot manage 31 March or other dates suggested. Asks if Bragg would take 31 March. Asks Bragg to confirm titles of lectures.

[Lawrence Bragg] to T.Martin, Royal Institution  W.L. BRAGG/62B/118  3 Dec. 1949

Contents:
[Cambridge] ¼ page, typescript
Will give evening lecture on 31 March. Title of lecture will be Famous experiments in the Cavendish Laboratory. His course of lectures will be entitled Recent researches in the Cavendish Laboratory.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/119  30 Dec. 1949

Contents:
London ¼ page, typescript
Bragg's letter of 26 December put them into a difficulty as the lecture list was at printers. Was able to find another lecturer for 31 March. Suggests Bragg lecture on 12 May.

[Lawrence Bragg] to [Alex] Wood  W.L. BRAGG/62B/120  7 Jan. 1950

Contents:
[Cambridge] ¾ page, typescript
Discusses plans for his Royal Institution lecture on 12 May on Famous experiments in the Cavendish Laboratory. Would welcome Wood's help, particularly in looking out the old papers and in making suggestions about the original experimental layout.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/121  23 Jan. 1950

Contents:
London ¼ page, typescript
Asks for further information about Bragg's course of lectures beginning on 9 March.

[Lawrence Bragg] to Thomas Martin, Royal Institution  W.L. BRAGG/62B/122  25 Jan. 1950

Contents:
[Cambridge] ½ page, typescript
Outlines plans for his four lectures on research being done at the Cavendish Laboratory. Has not assigned subjects to definite lectures and would like to leave himself free. Paragraph describing points covered in all the lectures would be most convenient. Asks if Martin would write this or whether Martin wants him to write the syllabus. Will not deal with the work on nuclear physics.

[Lawrence Bragg] to J.A.Ratcliffe  W.L. BRAGG/62B/123  25 Jan. 1950

Contents:
[Cambridge] 2/3 page, typescript
Is giving course of Royal Institution lectures on recent research at the Cavendish Laboratory. Wants to mention the work of Ratcliffe's group; comments on this. Would like to borrow the demonstrations [Martin] Ryle prepared for the Royal Society and would welcome other suggestions. Would like to discuss this with the people in Ratcliffe's section.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/124  31 Jan. 1950

Contents:
London ¼ page, typescript
Asks if Bragg and his wife will be coming to [E.N.da C.] Andrade's discourse on 17 February which Princess Elizabeth will attend.

[Lawrence Bragg] to Thomas Martin, Royal Institution  W.L. BRAGG/62B/125  1 Feb. 1950

Contents:
[Cambridge] ¼ page, typescript
Had not planned to come [to discourse] on 17th February but Martin's letter has made him change his mind. Asks Martin to reserve seats for him and his wife.

Royal Institution (Thomas Martin) to Lawrence Bragg  W.L. BRAGG/62B/126  18 Feb. 1950

Contents:
London ¼ page, typescript
Is enclosing tickets to admit Bragg's friends to his forthcoming course of lectures and a copy of the lecture list.

[Lawrence Bragg] to Mrs P.Biscoe, English-Speaking Union  W.L. BRAGG/62B/127  21 Feb. 1950

Contents:
[Cambridge] ¼ page, typescript
Has complimentary tickets for his series of Royal Institution lectures which begin on 9 March. Thought he might send them to the heads of the Canadian, Australian, South African and New Zealand scientific missions. Asks if she could tell him to whom he should send the tickets.

English-Speaking Union (Phyllis Biscoe) to Lawrence Bragg  W.L. BRAGG/62B/128  22 Feb. 1950

Contents:
London ¼ page, typescript
Is enclosing list of Scientific Liaison Officers; comments on this.
With list: 12/3 pages, typescript; W.L. BRAGG/62B/129

[Lawrence Bragg] to C.S.Piggot  W.L. BRAGG/62B/130  24 Feb. 1950

Contents:
[Cambridge] ¼ page, typescript
Is sending complimentary tickets for his course of Royal Institution lectures on the work of the Cavendish Laboratory.

C.S.Piggot to Lawrence Bragg  W.L. BRAGG/62B/131  27 Feb. 1950

Contents:
American Embassy, London
¼ page, typescript
Thanks Bragg for tickets for his Royal Institution lectures, which he will attend. Met Bragg's father and worked briefly in his laboratory at University College, London.

A.B.Hackwell to Lawrence Bragg  W.L. BRAGG/62B/132  1 March 1950

Contents:
Australian Scientific Research Liaison Office, London
½ page, typescript
Acknowledges letter of 24 February to J.E.Cummins. Mr Cummins is in Australia and will not return until the end of April. He will be pleased to attend Bragg's lectures. Thanks Bragg for the tickets.

E.Marsden to Lawrence Bragg  W.L. BRAGG/62B/133  3 March 1950

Contents:
New Zealand Scientific Office, London
¼ page, typescript
Thanks Bragg for tickets for Royal Institution lectures.

Edwin H.Rayner to Lawrence [Bragg]  W.L. BRAGG/62B/134  10 March [1950]

Contents:
General Electric Co.Ltd, Wembley
1/3 page, MS
Asks what subjects Bragg plans to discuss at his forthcoming lectures. Staff are anxious not to miss one in which they might be interested.

[Lawrence Bragg] to E.H.Rayner  W.L. BRAGG/62B/135  13 March 1950

Contents:
[Cambridge] 1/3 page, typescript
Gives outline of the subjects he will discuss at his remaining three [Royal Institution] lectures.

B.Wheeler Robinson to Lawrence Bragg  W.L. BRAGG/62B/136  18 March 1950

Contents:
National Physical Laboratory, Teddington
1¼ pages, typescript
Refers to Bragg's enquiry about their exhibit at the Royal Society. Is enclosing copy of paper giving a simple explanation of the Rayleigh Disc. Lord Rayleigh's description in The Theory of Sound is expressed quite simply. Gives references to papers which give fuller theoretical treatment of the Rayleigh Disc and to papers giving accounts of experimental investigations into the performance of the Disc.

[Lawrence Bragg] to [Alex] Wood  W.L. BRAGG/62B/137  21 March 1950

Contents:
[Cambridge] ½ page, typescript
His Royal Institution lecture has been postponed until 12 May and he has been concentrating on the preparation of other lectures and broadcasts. Will now start thinking about the evening lecture on Cavendish Laboratory experiments and hopes to consult Wood.

[Lawrence Bragg] to B.W.Robinson  W.L. BRAGG/62B/138  22 March 1950

Contents:
[Cambridge] 1/3 page, typescript
Thanks him for note about the Rayleigh Disc. They enjoyed seeing Robinson's wife again.

Alex Wood to [Lawrence] Bragg  W.L. BRAGG/62B/139  23 March 1950

Contents:
Cambridge ½ page, typescript
Has been remiss in his duties about historic apparatus. Has been ill and has to go into hospital for a fortnight. Will probably not be able to do much for a month but hopes to be well enough to give Bragg some help with lecture.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/140  24 April 1950

Contents:
[Cambridge] ¼ page, typescript
Will try to send manuscript of his Royal Institution discourse on about 12 May; comments on this.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/141  1 May 1950

Contents:
London ¼ page, typescript
Asks if Bragg could put on an exhibit in the Library in connection with his discourse on 12 May.

[Lawrence Bragg] to A.R.Hall  W.L. BRAGG/62B/142  2 May 1950

Contents:
[Cambridge] ½ page, typescript
Is enclosing ticket for his [Royal Institution] lecture on 12 May. Comments on apparatus he has collected.
Similar letters to H.P.Rooksby and Henry Tizard: W.L. BRAGG/62B/143 & 144

[Miss M.Smith] Secretary to Lawrence Bragg to Ralph Cory, R.I.  W.L. BRAGG/62B/145  4 May 1950

Contents:
[Cambridge] 1/3 page, typescript
Acknowledges letter of 1 May asking Sir Lawrence to show exhibit on 12 May. Sir Lawrence suggests he might show exhibit on polypeptide chain configurations in crystalline proteins, which is being shown at the Royal Society on 11 May.

[Lawrence Bragg] to A.J.V.Gale, Nature  W.L. BRAGG/62B/146  16 May 1950

Contents:
[Cambridge] ¼ page, typescript
Is enclosing account of his Royal Institution lecture.
With text: Famous experimental apparatus in the Cavendish Laboratory collection; 9¼ pages, typescript; W.L. BRAGG/62B/147
Revised text: 8¼ pages, typescript; W.L. BRAGG/62B/148.
Proof of article for Proceedings of the Royal Institution: W.L. BRAGG/62B/14
Cutting of article published in Nature, 1 July 1950; 4 pages, printed; W.L. BRAGG/62B/150.

Royal Institution (E.N.da C.Andrade) to [Lawrence] Bragg  W.L. BRAGG/62B/151  16 May 1950

Contents:
London ½ page, MS
Believes Bragg was pleased with the help he received from L.Walden with experiments at lecture. Asks Bragg to write to Walden. Bragg's lecture was a great success.

[Lawrence Bragg] to L.Walden, Royal Institution  W.L. BRAGG/62B/152  18 May 1950

Contents:
[Cambridge] ¼ page, typescript
Thanks Walden for arranging the experiments for his lecture so well.

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/153  25 May 1950

Contents:
[Cambridge] ¼ page, typescript
Is sending manuscript of his recent evening lecture. Comments on the figures.

[Lawrence Bragg] to W.Stone  W.L. BRAGG/62B/154  29 May 1950

Contents:
[Cambridge] 1/3 page, typescript
Thanks Stone for note. Was pleased to be able to say in lecture that a member of the audience had heard Maxwell lecture. Enjoyed going over the Maxwell apparatus. Had always known of Maxwell's theoretical work but had no idea how original Maxwell's experiments were until he studied them in detail.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/155  1 June 1950

Contents:
London ¼ page, typescript
Thanks Bragg for text and illustrations of discourse. Is enclosing prints of illustrations from Maxwell's Papers and Life. Comments on the diagram of Maxwell's apparatus for the demonstration of electro-magnetic units.
With 4 prints: W.L. BRAGG/62B/156-159

[Lawrence Bragg] to R.Cory, Royal Institution  W.L. BRAGG/62B/160  2 June 1950

Contents:
[Cambridge] 1/3 page, typescript
Comments on illustrations for his Royal Institution discourse.

Royal Institution (A.O.Rankine) to Lawrence Bragg  W.L. BRAGG/62B/161  16 Nov. 1950

Contents:
London 1/3 page, typescript
Understands Bragg will give course of lectures on metal physics. Suggests Bragg give lectures on the four Thursdays from 22nd February to 15th March. Suggests Bragg give evening discourse on 16th March.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/162  18 Nov. 1950

Contents:
[Cambridge] ¼ page, typescript
Will give lectures on the dates Rankine suggested. Will write later to suggest title for discourse, which he thinks he will be able to give on 16 March.

Royal Institution (A.O.Rankine) to Lawrence Bragg  W.L. BRAGG/62B/163  29 Nov. 1950

Contents:
London ¼ page, typescript
Asks if 16 March will be convenient for Bragg's discourse. Needs to know so he can arrange dates with other lecturers. Would like to know title.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/164  4 Dec. 1950

Contents:
[Cambridge] ¼ page, typescript
Will give evening discourse on 16 March. Suggests title Crystallographic research in the Cavendish Laboratory.

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/165  23 Jan. 1951

Contents:
London ¼ page, typescript
Would like to see copy of Bragg's R.I. discourse on crystallographic research.

Nature (A.J.V.Gale) to Lawrence Bragg  W.L. BRAGG/62B/166  23 Jan. 1951

Contents:
London 1/3 page, typescript
Asks Bragg for article summarising his course of Royal Institution lectures on metal physics.

[Lawrence Bragg] to [A.J.V.] Gale, Nature  W.L. BRAGG/62B/167  24 Jan. 1951

Contents:
[Cambridge] ¼ page, typescript
Does not think his Royal Institution lectures on metal physics lend themselves to an article; comments on this. Will try to send account of his evening discourse.

Royal Institution (Ralph Cory) to Lawrence Bragg  W.L. BRAGG/62B/168  25 Jan. 1951

Contents:
London ¼ page, typescript
Is sending tickets to admit Bragg's friends to his course of lectures and copies of the lecture list.

[Lawrence Bragg] to N.P.Allen  W.L. BRAGG/62B/169  26 Jan. 1951

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his Royal Institution lectures; comments on these.
Similar letters to Charles Goodeve, 26 Jan., W.L. BRAGG/62B/170, and to G.L.Bailey, 31 Jan.1951, W.L. BRAGG/62B/171.

Mabel Holliday to [Lawrence Bragg]  W.L. BRAGG/62B/172  13 Feb. 1951

Contents:
South Woodford ¼ page, MS
Asks for ticket for Royal Institution discourse on 16 March.

[Miss M.Smith] Sec. to Lawrence Bragg, to Miss M.Holliday  W.L. BRAGG/62B/173  17 Feb. 1951

Contents:
[Cambridge] ¼ page, typescript
Tickets for Sir Lawrence's discourse may be obtained from the Secretary of the Royal Institution.

Royal Institution (K.D.C.Vernon) to Lawrence Bragg  W.L. BRAGG/62B/174  28 Feb. 1951

Contents:
London 1/3 page, typescript
Asks if Bragg would like to arrange display of exhibits in library when he gives discourse on 16 March; comments on this.

[Lawrence Bragg] to K.D.C.Vernon, Royal Institution  W.L. BRAGG/62B/175  5 March 1951

Contents:
[Cambridge] 1/3 page, typescript
Will arrange exhibit for occasion of his evening lecture on 16 March; comments on this. Would like to show experiment at lecture with one of the counters used for detecting and measuring X-radiation. Asks if the Royal Institution could provide an x-ray type transformer set.

Royal Institution (E.N.da C.Andrade) to Lawrence Bragg  W.L. BRAGG/62B/176  6 March 1951

Contents:
London ½ page, typescript
Invites Bragg and his wife to dine before Bragg's lecture on 16 March. For some months, he has sent abstracts of evening discourses in advance to newspapers and technical journals. Asks for abstract of Bragg's discourse. Is enclosing specimens.
With abstracts of discourses by L.R.G.Treloar on rubber, 9 March 1951; 2/3 page, duplicated; W.L. BRAGG/62B/177, and by E.N.da C.Andrade on high vacuum, 2 Feb. 1951; 1½ pages, duplicated; W.L. BRAGG/62B/178.

[Lawrence Bragg]  W.L. BRAGG/62B/179  ca. March 1951

Contents:
Cambridge ¾ page, typescript
Summary of lecture Crystallographic research in the Cavendish Laboratory.

[Lawrence Bragg] to R.J.Hercock  W.L. BRAGG/62B/180  12 March 1951

Contents:
[Cambridge] ¼ page, typescript
Comments on R.I. discourse he is giving on 16 March on X-ray crystallography at the Cavendish Laboratory. Has not been sent tickets but letter will admit a couple of Hercock's people if they are interested in attending lecture.

[Lawrence Bragg] to E.N.da C.Andrade, Royal Institution  W.L. BRAGG/62B/181  14 March 1951

Contents:
[Cambridge] ¼ page, typescript
Thanks Andrade for his offer to arrange for Lady Bragg to change at the Royal Institution. They have arranged to meet at his sister's home, where they will change.

Royal Institution (K.D.C.Vernon) to Lawrence Bragg  W.L. BRAGG/62B/182  24 Sept. 1951

Contents:
London ¼ page, typescript
Gives provisional dates for Bragg's discourse and course of lectures. Lecture Committee next meets in October. Dates will have to remain provisional until after that meeting.

Royal Institution (K.D.C.Vernon) to Lawrence Bragg  W.L. BRAGG/62B/183  19 Oct. 1951

Contents:
London ¼ page, typescript
Thinks prints made from negatives used for lantern slides in Bragg's lecture will be suitable for reproduction in the Proceedings.

[Lawrence Bragg] to K.D.C.Vernon, Royal Institution  W.L. BRAGG/62B/184  1 Nov. 1951

Contents:
[Cambridge] 1/3 page, typescript
Is enclosing paper. Comments on figures.
With paper: X-ray crystallography; 10¼ pages, typescript; W.L. BRAGG/62B/185

Royal Institution (E.N.da C.Andrade) to Lawrence Bragg  W.L. BRAGG/62B/186  21 Nov. 1951

Contents:
London 1¼ pages, typescript
Four lectures on lines Bragg suggested would be excellent. If title is Interference and diffraction, should be sub-titles for each lecture. Comments on this. Is enclosing copy of Bragg's letter. Suggests Bragg lecture on 13, 20, 27 March and 3 April. Asks for title and summary of evening discourse, which he understands will be on aspects of the history of the Cavendish Laboratory. Exhibition of the Laboratory's treasures would be most welcome. Suggests 4 April for this discourse.
With copy of Bragg's letter of 2 November outlining plans for course of 4 afternoon lectures; ¾ page, typescript; W.L. BRAGG/62B/187

[Lawrence Bragg] to E.N.da C.Andrade, Royal Institution  W.L. BRAGG/62B/188  23 Nov. 1951

Contents:
[Cambridge] 1/3 page, typescript
Will write short summaries of his Royal Institution lectures and will send these with definite titles. [K.D.C.] Vernon provisionally arranged the lectures on 6, 13, 20 and 27 March and discourse on 28 March. Has to be in Edinburgh on 3 and 4 April, so hopes earlier dates are all right.

[Lawrence Bragg] to D.J.Price  W.L. BRAGG/62B/189  23 Nov. 1951

Contents:
[Cambridge] 1/3 page, typescript
At Royal Institution discourse in April, he would like to talk about archives at Cavendish Laboratory. Asks if Price could help him. Suggests title Letters and manuscripts in the Cavendish Laboratory collection.

[Miss M.Smith] Sec. to Lawrence Bragg to E.N.da C.Andrade  W.L. BRAGG/62B/190  26 Nov. 1951

Contents:
[Cambridge] ¼ page, typescript
Confirms that Bragg will give course of lectures on 21, 28 February and 6, 13 March, and evening discourse on 28 March.

Royal Institution (G.Patricia Davis) to Miss M.B.Smith  W.L. BRAGG/62B/191  11 Dec. 1951

Contents:
London 1/3 page, typescript
Has not yet received summary of Bragg's evening discourse and titles of course of lectures. Is anxious to send lecture list to the printers before Christmas.

[Lawrence Bragg] to Miss G.P.Davis, Royal Institution  W.L. BRAGG/62B/192  11 Dec. 1951

Contents:
[Cambridge] ¼ page, typescript
Had not realised she was so pressed for titles of lectures. Is enclosing summary of evening discourse and titles of the four lectures. Evening discourse might be entitled Treasures in the Cavendish Laboratory archives.
With summary of discourse, 2/3 page, typescript, W.L. BRAGG/62B/193, and titles of lectures in course on interference and diffraction, ¼ page, typescript; W.L. BRAGG/62B/194

[Lawrence Bragg] to Thomas Merton  W.L. BRAGG/62B/195  4 Jan. 1952

Contents:
[Cambridge] 1/3 page, typescript
Is to give course of Royal Institution lectures on interference and diffraction; discusses this. In the first lecture wants to deal with phase contract and would welcome Merton's help. Would like copies of Merton's papers on phase contrast methods.

[Lawrence Bragg] to D.Gabor  W.L. BRAGG/62B/196  4 Jan. 1952

Contents:
[Cambridge] 2/3 page, typescript
Is to give course of Royal Institution lectures on interference and diffraction; discusses this. Will describe Gabor's work on image reconstruction. Would like to show plan of the instrument which is under construction; comments on this. Would like some good slides of the elimination of the unwanted image; discusses this. Asks for information about the application of Gabor's idea to electron microscopy pictures.

[Lawrence Bragg] to H.Lipson  W.L. BRAGG/62B/197  4 Jan. 1952

Contents:
[Cambridge] ½ page, typescript
Is to give series of Royal Institution lectures on interference and diffraction; discusses this. Would welcome Lipson's help. Has not seen results Lipson got with his latest electron microscope. Would like some fly's eye pictures got with Lipson's limited set of repeating molecules.

[Lawrence Bragg] to Thomas Merton  W.L. BRAGG/62B/198  7 Jan. 1952

Contents:
[Cambridge] ¼ page, typescript
Thanks Merton for paper. Can make slides of the photographs. Would like to borrow good photographs from which he might make slides.

[Lawrence Bragg] to D.Gabor  W.L. BRAGG/62B/199  28 Jan. 1952

Contents:
[Cambridge] 1/3 page, typescript
His first Royal Institution lecture is on 21 February. Asks if he might show Gabor's method of image reconstruction at the lecture; discusses this. Will not press Gabor to let him show slide of the apparatus Gabor is making but would like to refer to it.

[Lawrence Bragg] to D.Gabor  W.L. BRAGG/62B/200  30 Jan. 1952

Contents:
[Cambridge] ½ page, typescript
Thanks Gabor for slides. Pleased he can have the demonstration apparatus. Asks Gabor to let him know if he would like help in transporting the apparatus to the Royal Institution.

[Lawrence Bragg] to G.L.Rogers  W.L. BRAGG/62B/201  5 Feb. 1952

Contents:
[Cambridge] 1/3 page, typescript
Thanks Rogers for paper. Asks if he might use illustration in his Royal Institution lecture on 21 February on principles of interference.

[Lawrence Bragg] to D.Gabor  W.L. BRAGG/62B/202  14 Feb. 1952

Contents:
[Cambridge] ¼ page, typescript
Is enclosing tickets for his course of Royal Institution lectures on interference and diffraction.

[Lawrence Bragg] to H.Lipson  W.L. BRAGG/62B/203  15 Feb. 1952

Contents:
[Cambridge] ½ page, typescript
Would like to talk about Lipson's work in lectures on 28 February and 6 March. Would like to have illustrations of resolving power comparison of observed intensities and optical pattern of spots obtained with a "fly's-eye-like" technique, comparison of simple transforms obtained optically and plots of calculated contours of the transforms, and examples of how the X-ray microscope works

H.Lipson to Lawrence Bragg  W.L. BRAGG/62B/204  18 Feb. 1952

Contents:
Manchester ½ page, typescript
Is enclosing prints of the resolving power photographs; comments on these. Is sending negatives from which Bragg can make slides. Thanks Bragg for obtaining £570 for him from the Royal Society. Has sent in manuscript of Volume III; comments on this.

H.Lipson to Lawrence Bragg  W.L. BRAGG/62B/205  21 Feb. 1952

Contents:
Manchester 2/3 page, typescript & MS
Is enclosing some optical diagrams; gives details of these. Would like to have the negatives and slides back.

[Lawrence Bragg] to K.D.C.Vernon, Royal Institution  W.L. BRAGG/62B/206  25 Feb. 1952

Contents:
[Cambridge] 2/3 page, typescript
Discusses apparatus and manuscripts he could exhibit at his evening lecture. Has film of celebrations in 1931 in which many famous scientists appear. Asks if Royal Institution can show the film. Asks if the epidiascope can cope with foolscap letters.

[Lawrence Bragg] to H.Lipson  W.L. BRAGG/62B/207  26 Feb. 1952

Contents:
[Cambridge] ½ page, typescript
Thanks Lipson for letter. Comments on photographs. Would like to show them at his Guthrie Lecture as well as at Royal Institution. Suggests Lipson round off royalties at 25%. Doubtless Lipson will ask [W.] Cochran to do a lot of proof correction, indexing and other work. Thinks offer is generous but for the sake of concord, Lipson should do this. Royal Society Soiree Committee accepted suggestion for Lipson's exhibit

Royal Institution (K.D.C.Vernon) to Lawrence Bragg  W.L. BRAGG/62B/208  27 Feb. 1952

Contents:
London ½ page, typescript
Is sure exhibition Bragg suggested would be greatly appreciated. Asks how much space exhibits will take. Will probably be able to show film; comments on this. Epidiascope gives illumination over maximum area of 7"x 7", so foolscap letter would have to be shown piecemeal; comments on this.

[Lawrence Bragg] to K.D.C.Vernon, Royal Institution  W.L. BRAGG/62B/209  5 March 1952

Contents:
[Cambridge] 2/3 page, typescript
Lists apparatus and manuscripts he plans to exhibit on 28 March and comments on space which this would take.

[Lawrence Bragg] to A.R.Hall  W.L. BRAGG/62B/210  11 March 1952

Contents:
[Cambridge] ¼ page, typescript
Hopes Hall can come to Royal Institution lecture on 28 March. Is enclosing ticket in case Hall would like to bring a guest.

[Lawrence Bragg] to Mrs D.W.Ashwin, Royal Institution  W.L. BRAGG/62B/211  11 March 1952

Contents:
[Cambridge] ¼ page, typescript
Thanks her for tickets for his discourse. A.R.Hall and D.J.Price are providing the exhibit for the library so presumes they will not need tickets themselves. Is giving them tickets in case they wish to bring friends.

[Lawrence Bragg] to D.Gabor  W.L. BRAGG/62B/212  13 March 1952

Contents:
[Cambridge] ¼ page, typescript
Is returning slides. One of them appears to be cracked; comments on this. Would like copies of some of the slides; gives details of these.

[Lawrence Bragg] to H.Lipson  W.L. BRAGG/62B/213  14 March 1952

Contents:
[Cambridge] ¼ page, typescript
Is returning Lipson's thesis. Would like to keep the photographs but is returning the slides. Thanks Lipson for his help with the lecture course. Must make up the fly's eye apparatus and pantograph as he thinks it is now a standard way of testing structures quickly.

[Lawrence Bragg] to E.C. Bullard  W.L. BRAGG/62B/214  15 March 1952

Contents:
[Cambridge] ¼ page, typescript
Is sending tickets for his Royal Institution lecture on 28 March about the Cavendish [Laboratory] archives.
Similar letters to Miss Chatwin, Frances Clode, P.C. Goodhart, Janet Kidd, Ben Lockspeiser and Enid McGougan: W.L. BRAGG/62B/215-220

[Lawrence Bragg] to K.D.C. Vernon, Royal Institution  W.L. BRAGG/62B/221  1 April 1952

Contents:
[Cambridge] ¼ page, typescript
Is enclosing manuscript of his evening lecture. Is also sending copy to Nature.
With text: The Cavendish Laboratory archives: 7¼ pages, typescript W.L. BRAGG/62B/222

[Lawrence Bragg] to A.J.V. Gale, Nature  W.L. BRAGG/62B/223  1 April 1952

Contents:
[Cambridge] 2/3 page, typescript
Is sending manuscript of his Royal Institution discourse; comments on this. Hears there is sometimes delay of several months between sending letter to Nature and its publication. Is this is so, thinks if must be because Nature receives too much material. Has impression people send material to Nature with little justification. Letter is justified when it will be exciting news to a large body of workers outside the man's specialised field and when it helps keep people from duplicating work. Not justified as way of publishing advance summary of work which will appear in amplified form in one of the journals. Asks if there is a way of filtering material so Nature can regain one of its principal functions, that of publishing letter quickly when occasion demands.

Royal Institution (A.O. Rankine) to Lawrence Bragg  W.L. BRAGG/62B/224  6 May 1952

Contents:
London ¼ page, typescript
Bragg has been re-elected Professor of Natural Philosophy in the Institution for the ensuing year. At Managers' Meeting, the desire was expressed that the Professors should serve on the Lectures Sub-Committee. Bragg has accordingly been appointed as a member of the Sub-Committee.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/225  7 May 1952

Contents:
[Cambridge] ¼ page, typescript
Acknowledges letter of 6 May. Has been a Professor at the Royal Institution for a long time. Counts on Rankine to let him know if he feels a change is necessary. Enjoys the position. Has a deep affection for the Institution and is keen to help. Will be pleased to serve on the Lectures Sub-Committee.

Royal Institution (A.O.Rankine) to Lawrence Bragg  W.L. BRAGG/62B/226  4 June 1952

Contents:
London 1/3 page, duplicated
Notice of meeting of Lectures Sub-Committee to be held on 9 June.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/227  6 June 1952

Contents:
[Cambridge] ¼ page, typescript
Regrets he cannot come to meeting on 9 June. Will try to send Rankine some suggestions about lectures.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/228  6 June 1952

Contents:
[Cambridge] 1¼ pages, typescript
Suggests [E.C.] Bullard might give children's lectures on work of the National Physical Laboratory; comments on this. [J.A.] Ratcliffe would give good series of children's lectures on radar; comments on this. Comments on people who might give good Friday evening lectures.

Royal Institution (A.O.Rankine) to Lawrence Bragg  W.L. BRAGG/62B/229  10 June 1952

Contents:
London 1/3 page, typescript
Thanks Bragg for suggestions for Lectures Sub-Committee. Has invited [D.J.] Price to give discourse on the discovery of Chaucer's manuscript. Invites Bragg to give the Christmas juvenile lectures.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/230  14 June 1952

Contents:
[Cambridge] 1/3 page, typescript
Regrets he cannot give Christmas lectures; comments on this. Pleased [D.J.] Price is to give lecture.

E.C.Bullard to Lawrence Bragg  W.L. BRAGG/62B/231  14 July 1952

Contents:
Teddington ¼ page, typescript
Understands Bragg suggested he might give the [Royal Institution] Christmas Lectures. Should have liked to do this but cannot spare the time, so has turned down the invitation.

[Lawrence Bragg] to A.O.Rankine, Royal Institution  W.L. BRAGG/62B/232  12 Aug. 1952

Contents:
[Cambridge] ½ page, typescript
Sorry [E.C.] Bullard turned down invitation to give Royal Institution Christmas Lectures. Would be pleased to try to get Bullard to change his mind. Thinks National Physical Laboratory would be an ideal subject. Comments on his visit to South Africa.

Royal Institution (A.O.Rankine) to Lawrence Bragg  W.L. BRAGG/62B/233  13 Aug. 1952

Contents:
London ½ page, typescript
Pleased Bragg enjoyed visit to South Africa. Invited [J.A.] Ratcliffe to give the children's [Christmas] lectures but he declined, although he would like to be invited another year. Has invited F.Sherwood Taylor to give the lectures on a subject related to the history of science. If Sherwood Taylor declines, will ask Bragg to reconsider his decision and, secondly, to use his influence with [E.C.] Bullard.

Royal Institution (D.W.Ashwin) to Lawrence Bragg  W.L. BRAGG/62B/234  27 Oct. 1952

Contents:
London ¼ page, typescript
Asks if it would be convenient for Bragg to give lectures on 5, 12, 19 and 26 March as suggested. Has told the Committee Bragg would prefer to give evening lecture after Easter.

[Lawrence Bragg] to Mrs [D.W.] Ashwin, Royal Institution  W.L. BRAGG/62B/235  27 Oct. 1952

Contents:
[Cambridge] ¼ page, typescript
Will give afternoon lectures on 5, 12, 19 and 26 March. Would prefer to give evening lecture in the May term.

Royal Institution (L.B.W.Jolley) to Lawrence Bragg  W.L. BRAGG/62B/236  18 Nov. 1952

Contents:
London ¼ page, typescript
Asks for titles and summary of Bragg's course of afternoon lectures.

[Lawrence Bragg] to L.B.W.Jolley, Royal Institution  W.L. BRAGG/62B/237  26 Nov. 1952

Contents:
[Cambridge] 1/3 page, typescript
Will give course of lectures on X-ray Optics; comments on this. Is enclosing summary. Comments on celebration of the 40th anniversary of the discovery of X-ray diffraction. Thought the history of the first few years, discussing [Max] von Laue's work and the start of his and his father's work, might be a good subject for an evening discourse.
With summary of course of lectures on X-ray Optics; ½ page, typescript; W.L. BRAGG/62B/238

Royal Institution (L.B.W.Jolley) to Lawrence Bragg  W.L. BRAGG/62B/239  27 Nov. 1952

Contents:
London 2/3 page, typescript
Asks for sub-titles for course of lectures on X-ray Optics. Is sure Lectures Sub-Committee will agree to Bragg's suggestion [for discourse]. Asks if Bragg could give discourse on 21, 29 May or 5 June.

[Lawrence Bragg] to K.D.C.Vernon, Royal Institution  W.L. BRAGG/62B/240  3 Dec. 1952

Contents:
[Cambridge] ¼ page, typescript
Is returning proofs of his 1951 address.

Royal Institution (L.B.W.Jolley) to Lawrence Bragg  W.L. BRAGG/62B/241  4 Dec. 1952

Contents:
London 1/3 page, typescript
Has booked 22 May for Bragg's discourse. Bragg did not enclose list of subtitles for course of lectures. Would like to have this as soon as possible.

[Lawrence Bragg]  W.L. BRAGG/62B/242  [1950]

Contents:
[Cambridge] 6pp., MS
Early researches in the Cavendish Laboratory: draft and notes.

[Lawrence Bragg]  W.L. BRAGG/62B/243  [1948]

Contents:
[Cambridge] 5½pages, typescript
The organisation and work of the Cavendish Laboratory.

[Lawrence Bragg]  W.L. BRAGG/62B/244  [ca. 1952]

Contents:
1 page, typescript
List of [Royal Institution] lectures given by Bragg 1940-1952.

R.I. lectures: texts  W.L. BRAGG/62C  1952-1954

[Lawrence Bragg]  W.L. BRAGG/62C/1  1952-1954

Contents:
MS notes and drafts chiefly for Royal Institution lectures on: Interference and diffraction of waves, 1952; X-ray optics, 1953; Cavendish Laboratory archives, Pasadena 1953; Transforms, Pasadena 1953; X-ray studies of biological molecules, 1954; X-ray optics, 1954.

A.J.C.Wilson to Lawrence Bragg  W.L. BRAGG/62C/2  24 Jan. 1953

Contents:
Cardiff 1½ pages, typescript & MS
Pleased Bragg plans to describe his work on symmetry elements in his Royal Institution lectures. Is enclosing reprint of paper given at Stockholm Congress in 1951. There have been some theoretical developments on the question of pseudo-symmetry since then, but no practical applications of these. Gives details of slides he is sending. Is sending collection of reprints on work of the laboratory. Is enclosing prints.

W.H.Taylor to Lawrence Bragg  W.L. BRAGG/62C/3  13 Feb. 1954

Contents:
Cambridge ¼ page, typescript
Is sending copies of the two papers which have been submitted to Acta Crystallographica.
With papers
a) X-ray diffraction by imidazole methaemoglobin, by Lawrence Bragg and E.R.Howells; 9pp. typescript with 2 MS figures; W.L. BRAGG/62C/4.
b) X-ray diffraction by a layer structure containing random displacements; 9 pages, typescript; W.L. BRAGG/62C/5.

[?Lawrence Bragg]  W.L. BRAGG/62C/6  undated

Contents:
34½ pages, typescript
Chapter 8: Direct methods of crystal structure analysis.

R.I. lectures: notes  W.L. BRAGG/63A  1952-1953

[Lawrence Bragg]  W.L. BRAGG/63A/1  1952

Contents:
[Cambridge] 22 pages, MS & typescript
Notes for Royal Institution lecture, 28 March 1952, on the Cavendish Laboratory's archives. Includes extracts from relevant papers, e.g. letter from Arthur Schuster to Lord Rayleigh, 8 Jan. 1880, about the teaching of practical physics; extract from minutes of preliminary meeting of the Physico-mathematical Society, 1849; M.Faraday to J.C.Maxwell, 13 Nov. 1857, about need to express results in "common language"; J.J.[Thomson] to Rutherford, 23 July 1899, about [C.T.R.] Wilson's cloud chamber and on the measurement of the value of m/e for the negative ions produced by ultra-violet light; J.J. [Thomson] with Rutherford, March 1919, about Rutherford's coming to the Cavendish Laboratory as Professor.

Lawrence Bragg  W.L. BRAGG/63A/2  1952

Contents:
6 pages, printed
The Cavendish Laboratory Archives, Royal Institution lecture, 28 March 1952.

Lawrence Bragg  W.L. BRAGG/63A/3  1950

Contents:
9½ pages, printed
Famous experiments in the Cavendish Laboratory; Royal Institution lecture, 12 May 1950.

F.E. Simon  W.L. BRAGG/63A/4  1953

Contents:
5 pages, printed
Count Rumford - the first applied scientist; Research, 1953, 6, 154-8. Reprint of Rumford's essays: Observations concerning the salubrity of warm rooms in winter, 1875, and Observations on the best means of heating the hall in which ordinary meetings of the Institute are held, 1875, with introduction by F.E.Simon.

Derek J.Price  W.L. BRAGG/63A/5  1952

Contents:
4pp, printed
Chaucer's Astronomy. Nature, 170, 20 Sept. 1952; p.474

Cambridge University  W.L. BRAGG/63A/6  1953

Contents:
7½pp, printed
Museum of the Cavendish Laboratory: an outline guide to exhibits.

E.N.da C.Andrade  W.L. BRAGG/63A/7  1943

Contents:
24pp, printed
Obituary Notice: William Henry Bragg, 1862-1942.
Obituary Notices of Fellows of the Royal Society, 4, Nov.1943, 277-300

Lectures and speeches: notes  W.L. BRAGG/63B  1950

[Lawrence Bragg]  W.L. BRAGG/63B/1  1950

Contents:
6½pp, typescript
Draft of speech at opening of the Dunlop Research Centre, in which Bragg discussed links between universities and industry.
With MS draft: 3pp; W.L. BRAGG/63B/2

[Lawrence Bragg]  W.L. BRAGG/63B/3  1950

Contents:
12pp, typescript
Text of Bragg's Radford Mather Lecture [delivered at the Royal Institution, 25 Oct. 1950]: Science and the adventure of living.
With proofs of the lecture, published in Advancement of Science: W.L. BRAGG/63B/4

[Lawrence Bragg]  W.L. BRAGG/63B/5  [1950]

Contents:
10¼pp, typescript
The standards of advanced studies and research in science and technology.

[Lawrence Bragg]  W.L. BRAGG/63B/6-9  [ca.1950]

Contents:
56pp, typescript & MS
Texts and notes for three lectures to the Oil & Colour Chemists' Association: A review of recent advances in x-ray analysis.

Royal Photographic Society: correspondence about Lucien Bull  W.L. BRAGG/63C  1955

A.R.Michaelis to Lawrence Bragg  W.L. BRAGG/63C/1  23 March 1955

Contents:
SIMPL Ltd, Lambeth High St, London
¼p, typescript
Is enclosing letter. Understands Bragg has known [Lucien] Bull for many years. If Bragg agrees with views expressed in letter, he might find a way of supporting them.
With enclosures
1. A.R.Michaelis to L.E.Hallett, Royal Photographic Society, 10 March 1955; 1¼pp, typescript; W.L. BRAGG/63C/2
Thinks some honour should be accorded to Lucien Bull, who since 1890 has used cinematography and photography in research. Discusses Bull's career. Suggests the Society honour Bull during Bull's forthcoming visit to England.
2. List of Lucien Bull's publications: 2½pp, typescript; W.L. BRAGG/63C/3

[Lawrence] Bragg to A.R.Michaelis  W.L. BRAGG/63C/4  25 March 1955

Contents:
¼p, typescript
Warmly supports Michaelis's proposal to honour [Lucien] Bull. Bull is a friend of long-standing. Bull developed the sound-ranging apparatus used by the British Army in the 1914-18 War. He, Bragg, was the first to set up the apparatus and experiment with it. Will be pleased to do what he can to support the proposal. Would like to put up Bull at the Royal Institution when he comes to England. Is writing to [L.E.] Hallett

[Lawrence] Bragg to L.E.Hallett, Royal Photographic Society  W.L. BRAGG/63C/5  25 March 1955

Contents:
1/3p, typescript
[A.R.] Michaelis has written to him about proposal that [Lucien] Bull should be honoured by the Society. Would be pleased if this were done. Has a great admiration for Bull's work; comments on this. Would be pleased to put Bull up at the Royal Institution.

Royal Photographic Society (L.E.Hallett) to Lawrence Bragg  W.L. BRAGG/63C/6  29 March 1955

Contents:
Kensington ¼p, typescript
Thanks Bragg for letter about [A.R.]Michaelis's proposal concerning Lucien Bull. Will bring Bragg's comments to the attention of Council when the question of honours is being discussed. Will remember that Bragg would be pleased to provide Bull with hospitality.

Royal Photographic Society (L.E.Hallett) to Lawrence Bragg  W.L. BRAGG/63C/7  16 Aug. 1955

Contents:
Kensington 1/3p, typescript
Council has resolved to confer on Lucien Bull, the Honorary Fellowship of the Society; comments on this. Believes Bull is to visit England in the autumn. Will try to find an opportunity then to present Bull with his certificate. Bragg may be able to come to the ceremony.

[Lawrence] Bragg to L.E.Hallett, Royal Photographic Society  W.L. BRAGG/63C/8  17 Aug 1955

Contents:
¼p, typescript
Has not written to [Lucien] Bull as he did not want to anticipate Hallett's letter to Bull. Asks Hallett to send enclosed letter to Bull at the appropriate time. Delighted the Society is to honour Bull. Is going to South Africa and will not be back until the end of October.

[Lawrence] Bragg to Lucien Bull  W.L. BRAGG/63C/9  17 Aug. 1955

Contents:
¼p, typescript
Congratulates Bull on his election as an Honorary Fellow of the Royal Photographic Society. His daughter will be in Paris at the end of September. Hopes Bull and Patience can meet.

A.R.Michaelis  W.L. BRAGG/63C/10  1955

Contents:
4pp, printed
E.J.Marey - physiologist and first cinematographer.
Includes note about award of Honorary Fellowship of the Royal Photographic Society to Lucien Bull, who worked with Marey. British Journal of Photography, 2 Dec. 1955

Royal Society Tercentenary: correspondence, minutes and related papers  W.L. BRAGG/63D  1957-1961

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/1  14 Oct. 1957

Contents:
Burlington House, London ¼p, typescript
Invites Bragg to become a member of the Society's Tercentenary Celebrations Committee.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/2  15 Oct. 1957

Contents:
¼p, typescript
Will be pleased to serve on the Tercentenary Celebrations Committee.

Royal Society (D.C.Martin) to Members of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/3  20 Nov. 1957

Contents:
Burlington House ¼p, duplicated
A meeting of the Committee will be held on 13 December.

Royal Society (D.C.Martin) to Members of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/4  5 Dec. 1957

Contents:
Burlington House 2/3p, duplicated
Agenda for Committee meeting to be held on 13 December.
With related papers
a) Terms of reference and membership of the Committee, 5 Dec. 1967; ¾p, duplicated; MS notes added [by WLB]. W.L. BRAGG/63D/5
b) General outline of suggested programme, 5 Dec. 1957; ¼p, duplicated; MS notes added [by WLB]. W.L. BRAGG/63D/6

Royal Society [D.C.Martin] to [Lawrence Bragg]  W.L. BRAGG/63D/7  [ca.15 Jan. 1958]

Contents:
Burlington House ¼p, typescript
None of the dates suggested for meeting of the Registration and Reception Sub-Committee of Tercentenary Celebrations Cttee was suitable. Is enclosing list of alternative dates.

[Miss D.Hutchinson] to D.C.Martin, Royal Society  W.L. BRAGG/63D/8  16 Jan. 1958

Contents:
¼p, typescript
Has marked list of dates for meeting of the Tercentenary Celebrations Committee. Comments on Sir Lawrence Bragg's engagements; 14th February would be the most convenient date.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/9  20 Jan. 1958

Contents:
Burlington House ¼p, typescript
Meeting of the Registration and Reception Sub-Committee of the Tercentenary Celebrations Committee will be held on 11 February.

Royal Society (D.C.Martin) to members of the Registration & Reception Sub-Committee of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/10  4 Feb. 1958

Contents:
Burlington House 2/3p, duplicated
Agenda for meeting of the Sub-Committee to be held on 11 February.
With related papers
a) Membership and terms of reference of the Sub-Committee, 15 Jan. 1958; 1¼pp, duplicated; W.L. BRAGG/63D/11
b) Extract from Minutes of the Tercentenary Celebrations Committee, held 13 December, concerning programme for celebrations; 29 Jan. 1958 1p, duplicated; W.L. BRAGG/63D/12
c) First suggested list of guests, 4 Feb. 1958; 31/3pp, duplicated; W.L. BRAGG/63D/13

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/14  5 Feb. 1958

Contents:
¼p, typescript
Regrets he will not be able to attend meeting of the Registration and Reception Sub-Committee on 11 February; comments on this.

Royal Society (D.C.Martin) to the Tercentenary Celebrations Committee  W.L. BRAGG/63D/15  21 Feb. 1958

Contents:
Burlington House 1p, duplicated
Agenda for Committee meeting to be held on 28 February.
With related papers
a) Minutes of Committee meeting held on 13 Dec. 1957; 27 Dec.1957; 2¼pp, duplicated; W.L. BRAGG/63D/16
b) Minutes of meeting of the Registration & Reception Sub-Committee held on 11 Feb. 1958; 14 Feb. 1958; 1½pp, duplicated; W.L. BRAGG/63D/17
c) Minutes of meeting of the Publications Sub-Committee, held on 20 Feb. 1958; 21 Feb.1958; 1½pp, duplicated; W.L. BRAGG/63D/18

Royal Society: Tercentenary Celebrations Committee  W.L. BRAGG/63D/19  6 March 1958

Contents:
1¾pp, duplicated
Minutes of Committee meeting held on 28 February 1958.

Royal Society (D.C.Martin) to the Programme Sub-Committee of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/20  13 March 1958

Contents:
Burlington House 1p, duplicated
Agenda for meeting of Sub-Committee to be held on 26 March 1958.
MS notes added by WLB concerning Tercentenary programme.
With related papers
a) Membership and terms of reference of the Sub-Committee, 15 Jan. 1958; 11/3pp, duplicated; W.L. BRAGG/63D/21
b) Extracts from Minutes of meetings of the Tercentenary Celebrations Committee held on 13 Dec. 1957 and 28 Feb. 1958, concerning programme of celebrations. 6 March 1958; 1¼pp, duplicated; W.L. BRAGG/63D/22

[Lawrence] Bragg to Lindor Brown, Royal Society  W.L. BRAGG/63D/23  25 March 1958

Contents:
1¼pp, typescript
Lists recent Royal Institution lectures which have been outstandingly good. List might be of help for the Tercentenary Celebrations.

Royal Society: Programme Sub-Committee of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/24  26 March 1958

Contents:
12/3pp, duplicated
Minutes of meeting of the Sub-Committee held on 20 March 1958.

[Lawrence] Bragg to Lindor Brown, Royal Society  W.L. BRAGG/63D/25  27 March 1958

Contents:
¼p, typescript
At meeting of the Programme Sub-Committee on 20 March, thought visit to Martin Ryle's laboratory was included as part of the Tercentenary Celebrations. This is not mentioned in the minutes.

Royal Society (D.C.Martin) to Registration & Reception Sub-Committee of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/26  15 April 1958

Contents:
Burlington House 1p, duplicated
Agenda for meeting of the Sub-Committee to be held on 22 April 1958.
With related papers
a) Minutes of the Sub-Committee meeting held on 11 Feb. 1958: 14 Feb. 1958; 1½pp, duplicated; W.L. BRAGG/63D/27
b) Suggested list of overseas guests, 15 April 1958; 9pp, duplicated; W.L. BRAGG/63D/28
c) Statement of numbers in each category of those who might attend the Tercentenary Celebrations, 15 April 1958; ¾p, duplicated; W.L. BRAGG/63D/29.

Royal Society: Registration & Reception Sub-Committee  W.L. BRAGG/63D/30  28 April 1958

Contents:
1¼pp, duplicated
Minutes of the Sub-Committee meeting held on 22 April 1958.
With suggested list of overseas representatives to receive invitations, 28 April 1958; 3¼pp, duplicated; W.L. BRAGG/63D/31.

Royal Society: Publications Sub-Committee of the Tercentenary Celebrations Committee  W.L. BRAGG/63D/32  9 May 1958

Contents:
¾p, duplicated
Suggestions submitted by Sir Harold Hartley for the Tercentenary issue of Notes and Records.

Royal Society (D.C.Martin) to the Tercentenary Celebrations Committee  W.L. BRAGG/63D/33  22 May 1958

Contents:
1p, duplicated
Agenda for Committee meeting to be held on 29 May.
With related papers
a) Minutes of Committee meeting held on 28 Feb. 1958: 6 March 1958; 1¾pp, duplicated; W.L. BRAGG/63D/34
b) Minutes of meeting of the Finance Sub-Committee, held on 12 March 1958: 26 March 1958; 1p, duplicated; W.L. BRAGG/63D/35
c) Minutes of Programme Sub-Committee meeting held on 20 March 1958: 26 March 1958; 12/3pp, duplicated; W.L. BRAGG/63D/36
d) Minutes of Publications Sub-Committee meeting held on 27 March 1958; 28 March 1958; ¾p, duplicated; W.L. BRAGG/63D/37
e) Minutes of meeting of Registration & Reception Sub-Committee, held on 22 April 1958: 28 April 1958; 1¼pp, duplicated; W.L. BRAGG/63D/38.
With appendix: suggested list of overseas representatives to receive invitations: 3¼pp, duplicated; W.L. BRAGG/63D/39
f) Minutes of meeting of Publicity Sub-Committee, held on 30 April 1958; 2 May 1958; 1½pp, duplicated; W.L. BRAGG/63D/40

Royal Society: Tercentenary Celebrations Committee  W.L. BRAGG/63D/41  4 June 1958

Contents:
2¼pp, duplicated
Minutes of Committee meeting held on 29 May 1958.

Royal Society (C.N.Hinshelwood) to Lawrence Bragg  W.L. BRAGG/63D/42  10 Sept. 1958

Contents:
Burlington House ½p, typescript
Comments on plans to celebrate the Royal Society's Tercentenary from 18 to 26 July 1960, and invites Bragg's support.

Royal Society: Publicity Sub-Committee  W.L. BRAGG/63D/43  29 Sept. 1958

Contents:
2pp, duplicated
Minutes of meeting of the Sub-Committee held on 25 September 1958. With notes concerning the Press and the Tercentenary Celebrations, by I.H.Cox and T.I.Williams, 18 Sept. 1958; 3½pp, duplicated; W.L. BRAGG/63D/44.

Royal Society (D.C.Martin) to [Lawrence Bragg]  W.L. BRAGG/63D/45  23 Oct. 1958

Contents:
Burlington House ½p, printed & typed
Suggests dates for a meeting of the Programme Sub-Committee of the Tercentenary Celebrations Committee.

[Lawrence]Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/46  24 Oct. 1958

Contents:
¼p, typescript
Cannot attend meeting of the Programme Sub-Committee on any of the dates suggested. If it is not possible to arrange other times, will have to miss the meeting.

Royal Society (D.C.Martin) to the Programme Sub-Committee  W.L. BRAGG/63D/47  29 Oct. 1958

Contents:
Burlington House 1p, duplicated
Agenda for the Sub-Committee meeting to be held on 5 November 1958.
With related papers
a) Minutes, 26 March 1958, of Programme Sub-Committee meeting held on 20 March 1958; 12/3pp, duplicated; W.L. BRAGG/63D/48
b) Outline programme of celebrations, 23 Oct. 1958; 2/3p, duplicated; W.L. BRAGG/63D/49
c) Extract from Minutes of Tercentenary Celebrations Committee, 28 Feb. 1958, and from Lawrence Bragg's letter, 25 March 1958, concerning scientific lectures: 24 Oct. 1958; ¾p, duplicated; W.L. BRAGG/63D/50
d) Scientific visits: offers from Fellows of the Royal Society. 29 Oct. 1958; ½p, duplicated; W.L. BRAGG/63D/51

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/52  1 Dec. 1958

Contents:
Burlington House ¼p, typescript
Asks Bragg for suggestions of possible lectures and lecturers for the Tercentenary Celebrations. It would be helpful if suggestions could be supported by a statement of recommendation.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/53  10 Dec. 1958

Contents:
11/3pp, typescript
Acknowledges letter of 1 December. Comments on people whom he thinks would give good lectures about recent British contributions to science and technology.

Royal Society (D.C.Martin) to the Tercentenary Celebrations Committee  W.L. BRAGG/63D/54  10 Dec. 1958

Contents:
Burlington House ¾p, duplicated
Agenda for Committee meeting to be held on 17 December 1958.
With related papers
a) Minutes, 4 June 1958, of Committee meeting held on 29 May 1958; 2¼pp, duplicated; W.L. BRAGG/63D/55
b) Minutes, 7 Nov. 1958, of meeting of Programme Sub-Committee held on 5 Nov. 1958; 2¼pp, duplicated; W.L. BRAGG/63D/56.
With outline programme, 7 Nov. 1958; ¾p, duplicated; W.L. BRAGG/63D/57.
c) Copy of correspondence concerning proposal for a documentary film in connection with the Tercentenary Celebrations, 27 Nov. 1958; 1¾pp, duplicated; W.L. BRAGG/63D/58
d) Translation of invitation issued in Latin, on the occasion of the 250th Anniversary of the Royal Society; 28 Nov. 1958; ½p, duplicated; W.L. BRAGG/63D/59

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/60  11 Dec. 1958

Contents:
Burlington House ¼p, typescript
Acknowledges letter of 10 December, giving suggestions for Tercentenary lectures and lecturers.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/61  22 Dec. 1958

Contents:
Burlington House ½p, typescript
Comments on proposal that much of the early publicity for the Royal Society's Tercentenary Celebrations should be in the form of scientific articles in the popular press. Invites Bragg to serve on Panel of Fellows, who would advise the authors when specialist knowledge was needed; discusses this.

Royal Society: Tercentenary Celebrations Committee  W.L. BRAGG/63D/62  29 Dec. 1958

Contents:
2¾pp, duplicated
Minutes of meeting of the Committee, held on 17 December 1958.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/63  30 Dec. 1958

Contents:
¼p, typescript
Will be pleased to serve on Panel of Fellows to assist the Press in matters concerning the Royal Society's Tercentenary celebrations.

Royal Society (D.C.Martin) to the Programme Sub-Committee  W.L. BRAGG/63D/64  31 Dec. 1958

Contents:
Burlington House 2/3p, duplicated
Agenda for meeting of the Sub-Committee to be held on 7 January 1959.
With related papers
a) Minutes, 7 Nov. 1958, of Sub-Committee meeting held on 5 Nov. 1958; 3¼pp, duplicated; W.L. BRAGG/63D/65. With copy: W.L. BRAGG/63D/66.
b) Extract from minutes of the Tercentenary Celebrations Committee, held on 17 Dec. 1958, concerning programme. 29 Dec. 1958; 1¼pp, duplicated; W.L. BRAGG/63D/67
c) Copies of letters, December 1958, from Lawrence Bragg, Kathleen Lonsdale, Lord Bridge and Harry Melville, concerning scientific lectures. 30 Dec. 1958; 1½pp, duplicated; W.L. BRAGG/63D/68
d) Copies of letter, December 1958, from E.E.Cheesman, Harold Himsworth and Harry Melville, concerning scientific visits. 30 Dec. 1958; 2½pp, duplicated; W.L. BRAGG/63D/69

Royal Society (C.N.Hinshelwood)  W.L. BRAGG/63D/70  [ca. Dec. 1958]

Contents:
1/3p, typescript
Draft invitation for Tercentenary celebrations.

Royal Society: Programme Sub-Committee  W.L. BRAGG/63D/71  6 Jan. 1959

Contents:
½p, duplicated
List of suggested Tercentenary lecturers.
MS notes added by WLB

Royal Society: Programme Sub-Committee  W.L. BRAGG/63D/72  10 Jan. 1959

Contents:
2pp, duplicated
Minutes of Sub-Committee meeting held on 7 January 1959.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/73  13 Feb. 1959

Contents:
Burlington House 1/3p, typescript
Shell Film Unit is making a special film for the Society's Tercentenary and would like to visit the Royal Institution to see the collection of instruments and material of historical interest. Asks if Bragg will agree to this.

Royal Society (D.C.Martin) to the Registration & Reception Sub-Committee  W.L. BRAGG/63D/74  13 March 1959

Contents:
Burlington House 2/3p, duplicated
Agenda for meeting of the Sub-Committee to be held on 20 March 1959.
With related papers
a) Minutes, 28 April 1958, of meeting of the Sub-Committee held on 22 April 1958; 1¼pp, duplicated; W.L. BRAGG/63D/75. With appendix: suggested list of overseas representatives to receive invitations, 28 April 1958; 3¼pp, duplicated; W.L. BRAGG/63D/76.
b) Outline programme of celebrations, 29 Jan. 1959; 1p, duplicated; W.L. BRAGG/63D/77
c) Foreign Universities invitation list, 12 March 1959; 3pp, duplicated; W.L. BRAGG/63D/78
d) Draft notice to accompany Registration and Accomodation form, 2 March 1959; 11/3pp, duplicated; W.L. BRAGG/63D/79. With draft form: 2pp, duplicated; W.L. BRAGG/63D/80
e) General invitation list, 3 March 1959; 1p, duplicated; W.L. BRAGG/63D/81.
f) Tercentenary Banquet: suggested categories to receive invitations, with estimated numbers, 3 March 1959; ¾p, duplicated; W.L. BRAGG/63D/82.

Royal Society: Registration & Reception Sub-Committee  W.L. BRAGG/63D/83  31 March 1959

Contents:
1¾pp, duplicated
Minutes of the Sub-Committee meeting held on 20 March 1959.
With Foreign Universities invitation list, notes for official guests, and draft registration and accomodation form: 6pp, duplicated; W.L. BRAGG/63D/84-86

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/87  14 April 1959

Contents:
Burlington House 1/3p, typescript
At meeting of the Publicity Sub-Committee, it was suggested that the Science Museum and the British Museum (Natural History) might arrange special scientific exhibitions for the Royal Society's Tercentenary. Is enclosing copy of letter to Dr Morrison-Scott. Would welcome help in getting Morrison-Scott to agree to the suggestion.
With enclosure
[D.C.Martin] to T.C.S.Morrison-Scott, Science Museum, 14 April 1959; ¼p, typescript; W.L. BRAGG/63D/88. Comments on suggestion that the Science Museum and the British Museum (Natural History) might consider arranging special exhibits for the Royal Society's Tercentenary. Would welcome Morrison-Scott's comments and help.

[Lawrence] Bragg to T.C.S.Morrison-Scott, Science Museum  W.L. BRAGG/63D/89  15 April 1959

Contents:
¼p, typescript
Hopes Morrison-Scott will respond to [D.C.] Martin's appeal concerning the Royal Society's Tercentenary celebrations. Would be pleased to help with planning the exhibit.

Royal Society (D.C.Martin) to Tercentenary Celebrations Committee  W.L. BRAGG/63D/90  11 May 1959

Contents:
Burlington House ¼p, duplicated
Meeting of the Committee will be held on 4 June.

[Lawrence] Bragg to T.C.S.Morrison-Scott, Science Museum  W.L. BRAGG/63D/91  18 May 1959

Contents:
¼p, typescript
The Royal Society's Tercentenary Committee has in mind a visit to the Science Museum during the Tercentenary celebrations. They would be pleased to help in suggesting things which would interest overseas visitors. Main idea is to stress the part Britain is playing in new developments.

Royal Society (D.C.Martin) to Tercentenary Celebrations Committee  W.L. BRAGG/63D/92  28 May 1959

Contents:
Burlington House 11/3pp, duplicated
Agenda for Committee meeting to be held on 4 June.
With related papers
a) Minutes, 29 Dec. 1958, of Committee meeting held on 17 Dec. 1958; 3pp, duplicated; W.L. BRAGG/63D/93.
b) Minutes, 10 Jan. 1959, of meeting of Programme Sub-Committee held on 7 Jan. 1959; 2pp, duplicated; W.L. BRAGG/63D/94.
c) Provisional programme for the Tercentenary celebrations, 22 April 1959; 2pp, duplicated; W.L. BRAGG/63D/95.
d) First list of suggested visits to scientific establishments: 1½pp, duplicated; W.L. BRAGG/63D/96.
e) Minutes, 16 Feb. 1959, of meeting of Publications Sub-Committee held on 11 Feb. 1959; 1¼pp, duplicated; W.L. BRAGG/63D/97.
f) Minutes, 19 Feb. 1959, of meeting of Publicity Sub-Committee held on 17 Feb. 1959; 2¾pp, duplicated; W.L. BRAGG/63D/98.
g) Minutes, 16 March 1959, of meeting of Publicity Sub-Committee held on 13 March 1959; 1p, duplicated; W.L. BRAGG/63D/99.
h) Minutes, 31 March 1959, of meeting of Registration & Reception Sub-Committee held on 20 March 1959; 1¾pp, duplicated; W.L. BRAGG/63D/100.
i) Invitation list, 14 April 1959; 5¾pp, duplicated; W.L. BRAGG/63D/101.
j) Minutes, 20 April 1959, of meeting of the Ladies Sub-Committee held on 21 April 1959; 2pp, duplicated; W.L. BRAGG/63D/102.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/103  10 June 1959

Contents:
Burlington House 1/3p, typescript
Gives dates decided for the Tercentenary lectures. Asks if the Royal Institution would be available on the dates mentioned. Is approaching the University of London to see whether Beveridge Hall would be available as a second lecture theatre.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/104  11 June 1959

Contents:
½p, typescript
Confirms dates for Tercentenary lectures at the Royal Institution. Asks if refreshments will be wanted; comments on this. Staff will be available should any of the lecturers wish to make arrangements about demonstrations.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/105  20 June 1959

Contents:
Burlington House 1/3p, typescript
Acknowledges letter of 11 June about use of the Royal Institution's lecture theatre for the Tercentenary lectures. Asks Bragg to reserve the R.I. lecture theatre on 20, 21, 23 and 25 July. Possibility of providing refreshments will be considered at the next meeting of the Programme Sub-Committee.

Royal Society (D.C.Martin) to the Programme Sub-Committee  W.L. BRAGG/63D/106  7 July 1959

Contents:
Burlington House 1¼pp, duplicated
Agenda for meeting of the Sub-Committee to be held on 14 July 1959.
With related papers
a) Minutes, 10 Jan. 1959, of meeting of Programme Sub-Committee held on 7 Jan. 1959: 2pp, duplicated; W.L. BRAGG/63D/107.
b) Extract from minutes of the Tercentenary Celebrations Committee meeting held on 4 June 1959, concerning scientific visits: 6 July 1959; 12/3pp, duplicated; W.L. BRAGG/63D/108.
c) Suggested lecture programme, 7 July 1959: 2/3p, duplicated; W.L. BRAGG/63D/109.
d) Notes on tours and visits to scientific establishments, 7 July 1959: 1¼pp, duplicated; W.L. BRAGG/63D/110.
e) First list of suggested visits to scientific establishments: 1½pp, duplicated; W.L. BRAGG/63D/111.
f) Outline of provisional programme: 6pp, duplicated; W.L. BRAGG/63D/112.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/113  9 July 1959

Contents:
¼p, typescript
The Managers have agreed to make the Royal Institution's lecture theatre available on the dates mentioned in Martin's letter of 20 June. Managers will waive the usual charge. Hopes to come to meeting of the Programme Sub-Committee on Tuesday.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/114  15 July 1959

Contents:
½p, typescript
Outlines changed arrangements for Royal Society Tercentenary lectures to be held at the Royal Institution. Notes approximate prices for refreshments.
With notes about cost of refreshments: 2/3p, typescript; W.L. BRAGG/63D/115

[Lawrence] Bragg to Harold Spencer Jones  W.L. BRAGG/63D/116  15 July 1959

Contents:
½p, typescript
Gives details of the revised arrangements for Royal Society Tercentenary lectures to be held at the Royal Institution and comments on arrangements for refreshments.

Royal Society: Programme Sub-Committee  W.L. BRAGG/63D/117  22 July 1959

Contents:
12/3pp, duplicated
Minutes of meeting of the Programme Sub-Committee held on 14 July 1959. With provisional programme, 22 July 1959: 5¼pp, duplicated; W.L. BRAGG/63D/118.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/119  27 July 1959

Contents:
1/3p, typescript copy
Asks if Bragg is willing to receive parties of Tercentenary visitors at the Royal Institution on 26 July 1960; comments on this.

Royal Institution (Ronald King) to Lawrence Bragg  W.L. BRAGG/63D/120  28 July 1959

Contents:
1¼pp, typescript
Is enclosing letter from the Royal Society. Has suggested a party of about 35 visit the Royal Institution. Bragg would address them in the lecture theatre and then different guides would take small groups around the R.I. It might be a suitable occasion to arrange an Open Day in the Laboratory for Members of the Royal Institution; discusses this. Is enclosing letter from Arnold asking for more information about the R.I. following receipt of the appeals letter to the electrical industry; comments on this.

Royal Society (D.C.Martin) to Fellows  W.L. BRAGG/63D/121  31 July 1959

Contents:
Burlington House 12/3pp, printed
Asks Fellows if they intend taking part in the Society's Tercentenary celebrations. Discusses plans for the celebrations.

[Lawrence] Bragg to J.H.Boreham, Royal Society  W.L. BRAGG/63D/122  3 Sept. 1959

Contents:
¼p, typescript
Boreham wrote to him about visits to the Royal Institution during the Tercentenary celebrations. Understand [Ronald] King has made all arrangements with Boreham.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/123  15 Oct. 1959

Contents:
Burlington House 1/3p, typescript
Refers to correspondence about visits to the Royal Institution on 26 July 1960 and comments on this. Asks for a description of the R.I., including an outline of what Bragg proposes to show to the visitors.

[Royal Institution (K.D.C. Vernon)] to [D.C.] Martin, Royal Society  W.L. BRAGG/63D/124  21 Oct. 1959

Contents:
¼p, typescript
Sir Lawrence Bragg has asked him to reply to letter of 15 October about visits to the Royal Institution in connection with the Royal Society's Tercentenary celebrations. Is enclosing a note about the R.I.
With note: 2/3p, typescript; W.L. BRAGG/63D/125

Royal Society (D.C. Martin) to Lawrence Bragg  W.L. BRAGG/63D/126  16 Nov. 1959

Contents:
Burlington House ½p, typescript
Is enclosing copy of report of special meeting to consider the possibility of holding a Tercentenary exhibition. Officers are recommending to Council that the Soirée Committee should meet as soon as possible to consider the suggestions of the meeting. Asks if 18 or 21 December would be suitable. Suggests people who might be co-opted to the Committee.
With notes, 29 Oct. 1959, on meeting held on 26 October: 1¼pp, duplicated; W.L. BRAGG/63D/127

[Lawrence] Bragg to D.C. Martin, Royal Society  W.L. BRAGG/63D/128  17 Nov. 1959

Contents:
½p, typescript
Is free on 18 and 21 November. Will be interested to talk to Martin about the meeting on 26 October. His experience of organising the British scientific contribution to the Brussels Exhibition made him realise the amount of work needed to produce a show in which exhibits are inter-related; comments on this. Would like to discuss suggestions about co-option of extra members [to Soirée Committee] when they meet.

Royal Society (D.C. Martin) to the Programme Sub-Committee  W.L. BRAGG/63D/129  27 Nov. 1959

Contents:
Burlington House 1¼pp, duplicated
Agenda for Sub-Committee meeting to be held on 4 December.
With related papers
a) Minutes, 22 July 1959, of meeting of Programme Sub-Committee held on 14 July: 1¾pp, duplicated; W.L. BRAGG/63D/130. With provisional programme, 22 July 1959: 5¼pp, duplicated; W.L. BRAGG/63D/131.
b) Note by H.W. Thompson on proposed visit to Oxford on 21 July 1960, 26 Nov. 1959: ½p, duplicated; W.L. BRAGG/63D/132.
c) Proposed programme for formal Opening Ceremony, 23 Nov. 1959: 2/3p, duplicated; MS notes added by WLB; W.L. BRAGG/63D/133.
d) Provisional programme: 33pp, duplicated; W.L. BRAGG/63D/134.

[Lawrence] Bragg to D.C. Martin, Royal Society  W.L. BRAGG/63D/135  2 Dec. 1959

Contents:
1¼pp, typescript
Discusses scheme for a Soirée on the occasion of the Royal Society's Tercentenary. General idea is that the exhibits should be a related whole rather than a series of individual contributions. Should decide what they want and invite the contributors. Suggests they circulate his suggestions to members of the Soirée Committee.
With list of research groups: ½p, typescript; W.L. BRAGG/63D/136.

Royal Society: Programme Sub-Committee  W.L. BRAGG/63D/137  8 Dec. 1959

Contents:
12/3pp, duplicated
Minutes of meeting of the Sub-Committee held on 4 December 1959.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/138  21 Dec. 1959

Contents:
½p, typescript
They have settled the immediate steps to take concerning the Tercentenary Soirée. Need to find out how much space would be available for each exhibit if there were about twenty exhibits. Would be helpful to have this information when writing to invite people to organise sections. Will try to draft letter if Martin sends him a note of the points which should be included. Officers will make suggestions about a small Sub-Committee. Will be at Waldringfield from 11 to 25 January.

Royal Society (G.L.Brown & W.V.D.Hodge) to Fellows and Foreign Members  W.L. BRAGG/63D/139  29 Jan. 1960

Contents:
Burlington House ½p, typescript
Comment on Garden Party to be held at Buckingham Palace on 14 July 1960 and ask Fellows and Foreign Members to return enclosed from if they wish to be nominated for inclusion in the Society's list of people to be recommended for invitations.

Royal Society (D.C.Martin) to Fellows  W.L. BRAGG/63D/140  22 Feb. 1960

Contents:
Burlington House 11/3pp, typescript
Is enclosing provisional programme for Tercentenary celebrations. Invites Fellows to indicate events in which they wish to participate; comments on this. Discusses the programme.

[Lawrence Bragg]  W.L. BRAGG/63D/141  [ca. Feb. 1960]

Contents:
1½pp, typescript
Notes on programme for the Royal Society's Tercentenary, on lectures to be held at the Royal Institution and on visits to the R.I.

[Lawrence] Bragg to C.D.Darlington  W.L. BRAGG/63D/142  9 March 1960

Contents:
¼p, typescript
Pleased Darlington is to give lecture at the R.I. on the occasion of the Royal Society's Tercentenary. They would be pleased to help with the arrangements for the lecture. Lecture theatre staff will be at Darlington's disposal.
Similar letters to A.C.B.Lovell (W.L. BRAGG/63D/143) and Alexander Todd (W.L. BRAGG/63D/144), 9 March 1960, and to Arnold Hall (W.L. BRAGG/63D/145), 10 March 1960.

Cyril Darlington to Lawrence Bragg  W.L. BRAGG/63D/146  11 March 1960

Contents:
Oxford ¼p, typescript
Thanks Bragg for letter. Wants to show lantern slides at lecture [for Royal Society's Tercentenary] and to demonstrate models which he showed at his Royal Institution lecture.

A.C.B.Lovell to Lawrence Bragg  W.L. BRAGG/63D/147  11 March 1960

Contents:
Jodrell Bank Experimental Station
¼p, typescript
Acknowledges letter of 9 March. Pleased he is to give [Royal Society Tercentenary] lecture at the Royal Institution. Will write again when he has decided on the illustrations for his lecture.

Alex R.Todd to Lawrence Bragg  W.L. BRAGG/63D/148  12 March 1960

Contents:
Cambridge ¼p, typescript
Thanks Bragg for offering the assistance of the R.I. lecture theatre staff in connection with his Tercentenary lecture on 20 July. Will get in touch with Bragg if there are any special arrangements needed.

Arnold Hall to Lawrence Bragg  W.L. BRAGG/63D/149  22 March 1960

Contents:
Knightsbridge ¼p, typescript
Acknowledges letter of 10 March. Will be pleased to avail himself of offer of help [with his Royal Society Tercentenary Lecture].

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/150  15 March 1960

Contents:
¼p, typescript
Whether they can organise refreshments after lectures at the R.I. in July will depend on the numbers. Asks Martin to let him know as soon as possible how many will attend lecture.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/151  17 March 1960

Contents:
Burlington House ¼p, typescript
Acknowledges letter of 15 March. Hopes refreshments can be arranged for the Tercentenary lectures at the R.I. Will let Bragg know the numbers as soon as possible.

Royal Society (D.C.Martin) to Tercentenary Celebrations Committee  W.L. BRAGG/63D/152  25 March 1960

Contents:
Burlington House ¼p, duplicated
Committee meeting will be held on 21 April.

Royal Society (G.L.Brown & W.V.D.Hodge) to Fellows and Foreign Members  W.L. BRAGG/63D/153  4 April 1960

Contents:
Burlington House 1/3p, typescript
Her Majesty The Queen will open the Tercentenary celebrations on 19th July 1960. King Gustav of Sweden will present at the ceremony. Comment on this.

Royal Society (D.C.Martin) to Tercentenary Celebrations Committee  W.L. BRAGG/63D/154  13 April 1960

Contents:
Burlington House 12/3pp, duplicated
Agenda for Committee meeting to be held on 21 April 1960.
With related papers
a) Minutes, 10 June 1959, of Committee meeting held on 4 June 1959: 3½pp, duplicated; W.L. BRAGG/63D/155.
b) Minutes, 22 July 1959, of meeting of Programme Sub-Committee held on 14 July 1959; 1¾pp, duplicated; W.L. BRAGG/63D/156.
c) Minutes, 8 Dec. 1959, of meeting of Programme Sub-Committee held on 4 Dec. 1959; 12/3pp, duplicated; W.L. BRAGG/63D/157.
d) Proposed programme arrangements, 8 April 1960, with suggested categories to be considered for invitations to opening ceremony; 4pp, duplicated; W.L. BRAGG/63D/158.
e) Summary of applications for participation in the various programme events as at 12 April 1960; 13 April 1960; 4½pp, duplicated; W.L. BRAGG/63D/159.
f) Proposed arrangements for Tercentenary Conversazione, 7 April 1960: 2pp, duplicated; W.L. BRAGG/63D/160.
g) Minutes of meeting of working group to arrange exhibits for Tercentenary Conversazione, held on 16 Feb.1960: 22 Feb.1960; 1¼pp, duplicated; W.L. BRAGG/63D/161. With plan of exhibition hall and list of portraits of 17th century Fellows, at the National Portrait Gallery: duplicated; W.L. BRAGG/63D/162-3.
h) Themes for exhibits and list of organisers for the Tercentenary Conversazione, 3 March 1960: 2/3p, duplicated; W.L. BRAGG/63D/164.
i) Proposed contents list for final programme, 11 April 1960: ½p, duplicated; W.L. BRAGG/63D/165.
j) Minutes, 23 March 1960, of meeting of Publications Sub-Committee held on 17 March 1960: 12/3pp, duplicated; W.L. BRAGG/63D/166.
k) Minutes, 24 June 1959, of meeting of Publicity Sub-Committee held on 17 June 1959; 3¼pp, duplicated; W.L. BRAGG/63D/167.
l) Minutes of meeting of Publicity Sub-Committee held on 18 Dec. 1959: 3pp, duplicated; W.L. BRAGG/63D/168.
m) Report of Press Officer, 11 March 1960: 21/3pp, duplicated; W.L. BRAGG/63D/169.
n) B.B.C. plans for television programmes to mark the Royal Society's Tercentenary, 31 March 1960: 21/3pp, duplicated; W.L. BRAGG/63D/170.
o) Minutes, 23 June 1959, of meeting of the Ladies Sub-Committee held on 12 June 1959: 1¾pp, duplicated; W.L. BRAGG/63D/171. With provisional programme, 23 June 1959: ¾p, duplicated; W.L. BRAGG/63D/172.
p) Minutes, 9 Oct. 1959, of meeting of the Ladies Sub-Committee held on 2 Oct. 1959: 2pp, duplicated; W.L. BRAGG/63D/173. With provisional programme, 9 Oct. 1959: ¾p, duplicated; W.L. BRAGG/63D/174.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/175  6 May 1960

Contents:
Burlington House ½p, typescript
Response to invitation to participate in the Tercentenary celebrations has been lower than expected. To date, nine people wish to visit the Royal Institution in the morning of 26 July and two in the afternoon; comments on this. Suggests afternoon visit be cancelled. Suggests each participant be given a leaflet giving information about the R.I. and the visit; discusses this.
With enclosures
a) List of people proposing to visit R.I.: 1¼pp, typescript; W.L. BRAGG/63D/176.
b) Notes on the R.I.: ¾p, printed; W.L. BRAGG/63D/177.
c) Preliminary list of official guests, to 6 April 1960, for the Royal Society's Tercentenary celebrations: 20pp, printed; W.L. BRAGG/63D/178.

Royal Society (D.C.Martin) to Fellows  W.L. BRAGG/63D/179  16 May 1960

Contents:
Burlington House 1/3p, typescript
Council has agreed to make available to Fellows' nominees, admission to the Tercentenary Lectures listed on attached sheet. Asks for list of nominees by 31 May. Plan to extend invitation to scientific societies and 6th form pupils of schools which attend the May conversazione. Scientific exhibits will be open to visitors for some days following the Tercentenary Conversazione on 23 July.
With list of lectures: 1½pp, typescript; W.L. BRAGG/63D/180.

[Royal Institution]  W.L. BRAGG/63D/181-183  May 1960

Contents:
3pp, typescript & MS
Lists of R.I. staff who want tickets for the Royal Society Tercentenary lectures.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/184  16 May 1960

Contents:
¼p, typescript
Suggests afternoon visit to the R.I. on 26 July should not be cancelled. Will not lay on a special show. Could provide refreshments; comments on this. Is enclosing twelve copies of Thomas Martin's book on the Royal Institution. These could be given to those who are visiting the R.I.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/185  20 May 1960

Contents:
Burlington House ¼p, typescript
Pleased Bragg wishes both R.I. visits to stand. Suggests visits take place at 10.15 a.m. and 2.30 p.m. Thanks Bragg for brochures on the Royal Institution.

Royal Society (Max Whitchurch) to Lawrence Bragg  W.L. BRAGG/63D/186  21 June 1960

Contents:
Burlington House 1/3p, typescript
Asks if Bragg would permit Press representatives to be present at the R.I. at the same time as official guests. If Bragg agrees, would like to know to whom Press enquiries should be referred. Press representation is likely to be limited to writers on technical journals and certain science correspondence.

Royal Society (D.C.Martin) to Fellows  W.L. BRAGG/63D/187  24 June 1960

Contents:
Burlington House 1¼pp, typescript
Tickets, invitation cards and programme can be collected on 18 or 19 July; comments on this. Discusses arrangements for the Opening Ceremony on 19 July.

[Lawrence] Bragg to Max Whitchurch, Royal Society  W.L. BRAGG/63D/188  1 July 1960

Contents:
1/3p, typescript
Will ask Managers if Press representatives may visit the R.I. on 26th July. Thinks it is safe to assume that they will agree. More convenient if the Press came in the afternoon. As number of Royal Society Tercentenary visitors is small, has invited representatives of other bodies to join the party. Press enquiries should be addressed to Professor [R.] King.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/189  7 July 1960

Contents:
Burlington House ¼p, typescript
Is enclosing latest list of participants in the R.I. visit on 26 July. Comments on visits. Would like a further six copies of pamphlet about the R.I.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/190  12 July 1960

Contents:
Clarence Terrace, London ¼p, typescript
The King of Sweden will attend [C.D.] Darlington's lecture on 20 July. Suggests Bragg and [Gerard] Thornton receive the King downstairs and introduce [Ojvind] Winge and Darlington outside the lecture theatre.

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/191  13 July 1960

Contents:
¼p, typescript
Acknowledges letter about arrangements for the King of Sweden to attend [C.D.] Darlington's lecture on 20 July. Will be pleased to do as Martin suggests.

Royal Society (D.C.Martin) to Lawrence Bragg  W.L. BRAGG/63D/192  15 July 1960

Contents:
Burlington House 1/3p, typescript
Lord Brabazon has accepted invitation to welcome the King of Sweden at the Royal Institution. Is enclosing a copy of letter to Lord Brabazon and order of proceedings for visit.
With enclosures
a) [D.C.Martin] to Lord Brabazon of Tara, 15 July 1960: the President is pleased Lord Brabazon will head the Reception Party for the King of Sweden, when he visits the R.I. to attend a Tercentenary lecture. 1/3p, typescript; W.L. BRAGG/63D/193
b) Order of proceedings for visit of the King of Sweden to the R.I.: 1p, typescript; W.L. BRAGG/63D/194

[Lawrence] Bragg to D.C.Martin, Royal Society  W.L. BRAGG/63D/195  18 July 1960

Contents:
1/3p, typescript
Acknowledges note about arrangements for the King of Sweden's visit. Comments on the seating arrangements for the lecture.

[Royal Society] D.C.Martin to Lawrence Bragg  W.L. BRAGG/63D/196  [ca. 19 July 1960]

Contents:
1/3p, typescript
Comments on seating arrangements for the King of Sweden's attendance at [C.D.] Darlington's lecture.

Royal Society  W.L. BRAGG/63D/197  [ca. July 1960]

Contents:
2/3p, duplicated
Notes on arrangements for lecture by C.D.Darlington at the Royal Institution on 20 July.

Royal Society  W.L. BRAGG/63D/198  [ca. July 1960]

Contents:
2/3p, duplicated
Notes on arrangements for lecture by A.C.B.Lovell at the Royal Institution on 23 July 1960.

Royal Society (Max Whitchurch) to Lawrence Bragg  W.L. BRAGG/63D/199  22 July 1960

Contents:
Burlington House 1/3p, typescript
A representative from the Central Office of Information would like to join the afternoon visit to the R.I.; comments on this.

Royal Society (Max Whitchurch) to Lawrence Bragg  W.L. BRAGG/63D/200  21 July 1960

Contents:
Burlington House ¼p, typescript
B.B.C. Science Unit has asked if Bragg would make a three-minute tape recording for Radio Newsreel, about the exhibition of British science at the Royal Society conversazione. Science Unit will be represented at the Press preview on 23 July and representative would like to talk to Bragg then.

Lawrence Bragg  W.L. BRAGG/63D/201  July 1960

Contents:
1¼pp, typescript
Text of talk on exhibits at the Royal Society's Tercentenary conversazione, recorded for B.B.C. "Today" programme and broadcast on 25 July 1960.

Life Magazine (Dorothy Bacon) to K.D.C.Vernon  W.L. BRAGG/63D/202  17 March 1961

Contents:
New Bond Street, London 1/3p, typescript
They have given all the prints of the Royal Society Tercentenary photographs to the Royal Society for distribution. The Royal Society has sent Sir Lawrence Bragg two prints of Bragg with the Duke of Edinburgh. The Royal Society has no more of these prints. Hesitates to ask their New York office for further prints; comments on this. Is enclosing copy of Life International of 12 September.

Central Office of Information (T.Fife Clark) to Lawrence Bragg  W.L. BRAGG/63D/203  9 Oct. 1961

Contents:
Hercules Rd, London ½p, typescript
Bragg collaborated with them in special publicity effort overseas to mark the Royal Society's Tercentenary. Is enclosing note concerning the success of this venture. Is also enclosing copies of publications in the Modern World series; comments on these. Thanks Bragg for his help.

[Lawrence] Bragg to T.Fife Clark, Central Office of Information  W.L. BRAGG/63D/204  17 Oct. 1961

Contents:
¼p, typescript
Thanks Clark for letter and booklets. Was interested to read overseas comments about the Royal Society's Tercentenary.

Royal Society Tercentenary, 1960: programmes, brochures, press cuttings  W.L. BRAGG/64A  1960

Royal Society Tercentenary  W.L. BRAGG/64A/1-34  1960

Contents:
34 items, printed & typescript (7 photographs)
File of programmes, brochures, newspaper cuttings concerning the Royal Society's Tercentenary celebrations, including the Tercentenary Conversazione. Includes several photographs of Lawrence Bragg at the celebrations, notes on Fellows of the Royal Society, and articles on the history of the Society.

Solvay Conferences: correspondence  W.L. BRAGG/64B  1959-1961

Robert Oppenheimer to Lawrence Bragg  W.L. BRAGG/64B/1  21 April 1959

Contents:
Princeton ¼ page, typescript
[I.] Prigogine came to see him about affairs of the Solvay Conference. Death of [W.] Pauli has left vacancy on the scientific committee. Does not think they could do better than invite [L.] Van Hove. Might be appropriate time to find a physicist from the U.S.S.R. Does not think [L.D.] Landau would be able to serve effectively, but [I.E.] Tamm might be a good choice.

[Lawrence] Bragg to N.F. Mott  W.L. BRAGG/64B/2  29 April 1959

Contents:
1/3 page, typescript
Need to find someone to replace [W.] Pauli on the Solvay Scientific Committee; comments on this. Would welcome Mott's ideas. Would also welcome ideas for subject of next Solvay Conference. Report of last Conference came out reasonably quickly. Thinks [I.] Prigogine will be a good Secretary.

N.F. [Mott] to [Lawrence] Bragg  W.L. BRAGG/64B/3  1 May [1959]

Contents:
Cambridge 1¼ pages, MS
Thinks [I.E.] Tamm would be excellent [member of Solvay Scientific Committee]. Might try [M.F.] Perutz and [F.] Sanger for next conference. Solvay Conference should be on a small but growing subject.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/4  4 May 1959

Contents:
¼ page, typescript
Should propose new member of [Solvay] Scientific Committee to replace [W.] Pauli. If Prigogine agrees, will consult views of the other members. Comments on number of copies of proceedings of the last Conference which have been ordered.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/5  12 May 1959

Contents:
Institut International de Chimie Solvay, Brussels
1/3 page, typescript
Acknowledges letters of 4 and 8 May. Before proposing new member of Scientific Committee, would like to discuss with Bragg the organisation of the Institut International de Physique Solvay. Asks if it would be convenient for him to come to London on 15 June to see Bragg. Is sending copy of last Solvay Report to the Royal Institution.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/6  21 May 1959

Contents:
[Royal Institution]
½ page, typescript
Would be pleased to see Prigogine on 15 June to discuss the Institut International de Physique Solvay. If Prigogine would give him some information about problems to be discussed, could get views of [N.F.] Mott and some other members of the Committee before the meeting. Has been corresponding with [J.] Geheniau about production of the Report. Something has gone wrong with distribution of notices inviting orders for the Report; discusses this. Prigogine might like to see some of the work being done at the Royal Institution.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/7  11 June 1959

Contents:
Brussels
¼ page, typescript; telegram; French
Cannot come on Monday. Letter following.

I. Prigogine to [Lawrence] Bragg  W.L. BRAGG/64B/8  16 June 1959

Contents:
Brussels 1½ pages, typescript
Cannot visit Bragg before the autumn. Administrative Council has decided membership of Scientific Committee may be increased to twelve; comments on this. Asks if Bragg thinks it would be useful to have a member in Brussels who would be scientific secretary of the Committee. Might ask [J.] Geheniau. Asks if it would be helpful to have a Soviet physicist, a Japanese physicist and a brilliant young theoretica physicist on the Committee; comments on this. Thinks it would be appropriate to consider [L.] Van Hove as a candidate for the Committee.

[Lawrence] Bragg to J.R. Oppenheimer  W.L. BRAGG/64B/9  29 June 1959

Contents:
½ page, typescript
Apologises for delay in replying to letter of 21 April about the Solvay Committee. [I.] Prigogine is suggesting a Committee of about a dozen. Thinks this is top-heavy as the Conference is so restricted. Members of Committee are ex officio guests at each Conference. If Committee were large, would have to cut down number of invitations to experts in each chosen field. Is enclosing copy of letter he has written to Prigogine. Asks if Oppenheimer has any ideas about subject for next conference. [N.F.] Mott suggested conference on biophysics. Mott approves of Oppenheimer's idea of appointing [I.E.] Tamm to replace [W.] Pauli.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/10  29 June 1959

Contents:
1¼ pages, typescript
Thinks it would be excellent to ask [J.] Geheniau to act as scientific secretary of the [Solvay Scientific] Committee. Should appoint a special man for each conference; discusses this. Does not think it would be wise to double the size of the Physics Committee. Thinks a committee of six is enough for such a small conference. Would be reluctant to see the number on the committee raised by more than one or two.

Verna Hobson to [Lawrence] Bragg  W.L. BRAGG/64B/11  7 July 1959

Contents:
Princeton ¼ page, typescript
Acknowledges receipt of letter of 29 June. [J.R.] Oppenheimer is away and does not plan to return to Princeton until late August. Hopes she is right in thinking she may keep the letter until his return.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/12  16 Jan. 1960

Contents:
Brussels ¼ page, typescript; French
Acknowledges letter of 8 December. Asks if he might call to see Bragg on 23rd March.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/13  16 Jan. 1960

Contents:
Brussels ¼ page, typescript; French
Asks for suggestions about the celebration of the 50th anniversary of the Solvay Conference in 1961.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/14  1 Feb. 1960

Contents:
[Royal Institution]
¼ page, typescript
Will look forward to seeing Prigogine on 23 March. Has not had a brain-wave about form of the 1961 meeting. Should be something special as it is 50th anniversary [of Solvay conferences].

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/15  16 Feb. 1960

Contents:
[Royal Institution]
½ page, typescript
Might mark 50th anniversary of [Solvay Physics Conferences] by a joint meeting of physicists and chemists; discusses this and proposes conference on the structure of biological molecules. If Prigogine's committee thinks this is possible, suggests he send copy of the letter to the President of the Chemical Conference for his views.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/16  3 March 1960

Contents:
Institut International de Chimie Solvay, Brussels
¼ page, typescript
Acknowledges letter of 16 February and suggestions about the next Solvay conference. Subject Bragg suggested [structure of biological molecules] seems difficult because chemistry conference in 1959 was on nucleoproteins. Next chemistry conference will be on energy transferts. Suggests they discuss this when they meet.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/17  7 March 1960

Contents:
[Royal Institution, London]
¼ page, typescript
Will look forward to having a talk with Prigogine on 23 March. Asks Prigogine to let him know what time would be convenient. Suggests they get views of other members of the Physics Committee beforehand; comments on this.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/18  15 March 1960

Contents:
Institut International de Chimie Solvay, Brussel
¼ page, typescript
Acknowledges letter of 7 March. Plans to call at Royal Institution at about 2.30 p.m. Thinks it is too late to send copy of letter of 16 January to members of the [Physics] Committee. Can write to the Committee after he and Bragg have met.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/19  24 March 1960

Contents:
Institut International de Chimie Solvay, Brussels
1/3 page, typescript; French
Enjoyed talk with Bragg. First Solvay conference was entitled La Théorie du Rayonnement et les Quanta. Thanks Bragg for his help.

[Lawrence] Bragg to N.P. Mott  W.L. BRAGG/64B/20  25 March 1960

Contents:
1¼ pages, typescript
Next meeting of the Solvay Physics Conference will be in 1961, the 50th anniversary of the first Physics Conference on La Théorie du Rayonnement et les Quanta. Might mark the occasion by repeating the subject of the first conference; comments on this. Asks if Mott agrees to this. Suggests people who might be invited to participate in the conference and to suggest subjects for Reports. Suggests other guests. Asks whether Mott thinks June or October would be more suitable. Total number of participants is limited to between twenty and twenty five; comments on this. Discusses proposal that membership of the Committee should be increased. Might have a couple more members, but should not make Committee too large. Would welcome views about size of the committee and suggestions for new members.
With part of similar letter to [E.] Amaldi, 28 March 1960; 1 page, typescript. W.L. BRAGG/64B/21

N.F. Mott to Lawrence Bragg  W.L. BRAGG/64B/22  28 March 1960

Contents:
Cambridge 1/3 page, typescript
Thinks it would be a good idea to have Solvay Conference on same subject as that 50 years ago. This would be on the field theory of radiation. Bragg should ask [R.E.] Peierls for advice Peierls and [A.B.] Pippard would be useful on the committee. Might invite [I.E.] Tamm from Russia and [F.] Seitz from U.S.A. to join Committee.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/23  28 March 1960

Contents:
¼ page, typescript
Is enclosing copy of letter he is sending to members of the Committee. Need to be sure of the support of the Committee in choice of subject [for Solvay Physics Conference] before committing themselves further. Appreciates Prigogine's help in planning for the conference.

Robert Oppenheimer to [Lawrence] Bragg  W.L. BRAGG/64B/24  29 March 1960

Contents:
Princeton ½ page, typescript
Acknowledges letter of 25 March. Approves of Bragg's suggestion for next Solvay Conference. Should include some men identified with improvements and extensions of the quantum theory since the war. [R.P.] Feynman would be a good example. Achievements in understanding the mathematical consequences of general principles of relativity and quantum theory should play some part in reports or discussions. Agrees that the scientific committee should not be too greatly enlarged. Would be pleased to see [I.E.] Tamm, [N.N.] Bogoliubov or [L.D.] Landau added. June or October would be possible for the Congress, but June eould be easier.

C.J. Gorter to Lawrence Bragg  W.L. BRAGG/64B/25  1 April 1960

Contents:
Leiden 2/3 page, typescript
Hopes it will be possible for major figures in theoretical physics to attend next Solvay Conference. Should concentrate on a few central topics. Agrees with Bragg's list of people to be invited. Might also include [E.P.] Wigner, [H.A.] Bethe, or [J.C.] Slater. Agrees that [I.E.] Tamm should be asked to join committee, which should not be made too large. Might ask some senior members of the conference to take a share in presiding at the sessions; discusses this.

E. Amaldi to [Lawrence] Bragg  W.L. BRAGG/64B/26  4 April 1960

Contents:
Rome 1¼ pages, typescript
Likes suggestion of having the 1961 Solvay Conference on La Théorie du Rayonnement et les Quanta. Comments on the interpretation of the title. Comments on people who might be invited to the conference. Agrees that the committee should not be enlarged too much. Proposal that [I.E.] Tamm should replace [W.] Pauli is excellent.

[Lawrence] Bragg to C.J. Gorter  W.L. BRAGG/64B/27  5 April 1960

Contents:
¼ page, typescript
Thanks Gorter for his letter about Solvay Conference. Will let members of the Committee know what is the consensus of opinion. Sees much in favour of asking senior members to take the Chair in turn. Suggestion was made before but was not adopted at the last conference.

[Lawrence] Bragg to J.R. Oppenheimer  W.L. BRAGG/64B/28  5 April 1960

Contents:
Royal Institution, London
¼ page, typescript
Acknowledges letter of 29 March. Will write again when he has received replies from members of the Committee.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/29  5 April 1960

Contents:
Institut International de Chimie Solvay, Brussels
¼ page, typescript
Acknowledges letter of 28 March. Would like to have [L.] Van Hove as a member of the Scientific Committee. Comments on Van Hove. Should invite Max Born to the Conference.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/30  6 April 1960

Contents:
½ page, typescript
Is enclosing copies of letters he has received about proposals for the next Solvay Conference. Has not heard from [C.] Møller or [F.H.J.] Perrin but thinks they can go ahead with plans for conference on quantum theory. Is enclosing copy of letter he is sending to Niels Bohr and others. When replies have been received, can decide whether June or October would be better. Will be at his country home until 25 April. [E.] Amaldi seemed surprised to be a member of the Committee and had not been asked to serve; comments on this.

[Lawrence Bragg] to Niels Bohr  W.L. BRAGG/64B/31  7 April 1960

Contents:
½ page, typescript
Solvay Physics Conference will be held in 1961. This will be 50th anniversary of the first Physics Conference and they plan to mark the occasion by repeating the subject of the first conference - La Theorie du Rayonnement et les Quanta; comments on this. Invites Bohr to participate in the conference and to let him know whether June or October would be more convenient. Lists people whom he is inviting and asks for suggestions of others who should be invited and of those who should write the reports on which discussions are based. All expenses will be paid.
Similar letter, 7 April, to Louis de Broglie, R.P.Feynman, Werner Heisenberg, W. Heitler, L.D.Landau, R.E.Peierls and Hideki Yukawa. W.L. BRAGG/64B/32-38

Niels Bohr to Lawrence Bragg  W.L. BRAGG/64B/39  12 April 1960

Contents:
Copenhagen ½ page, typescript
Thinks it is a good idea to celebrate the 50th anniversary of Solvay Physics Conference in the way Bragg proposes. Either June or October 1961 would suit him. Remembers interesting talk he had with [Ernest] Rutherford after Rutherford returned from the first Solvay Conference in 1911, where he met [Max] Planck and [A.] Einstein for the first time. Suggests people who might be invited to conference. Imagines [W.] Heisenberg and others will be asked to write about the latest developments [in quantum physics]. He could write a short account of developments immediately following the first Solvay meeting.

W. Heitler to Lawrence Bragg  W.L. BRAGG/64B/40  19 April 1960

Contents:
Zurich 2/3 page, typescript
Will be delighted to attend the Solvay Conference in 1961. June or October would suit him. Should invite some representatives of the modern, more formal developments of field theory; suggests names. Would be pleased to write report on historical development and present physical aspects of quantum field theory. Suggests people who might write other reports for conference.

W. Heisenberg to Lawrence Bragg  W.L. BRAGG/64B/41  21 April 1960

Contents:
Munich ½ page, typescript
Acknowledges letter about 1961 Solvay Conference on La Theorie du Rayonnement et les Quanta. Theme has become a very wide field of theoretical physics. Need to concentrate on only a few special topics. Suggests topics which might be discussed and people who might be invited to participate.

Louis de Broglie to [Lawrence Bragg]  W.L. BRAGG/64B/42  25 April 1960

Contents:
Paris 2 pages, MS; postcard; French
Thanks Bragg for invitation to the 1961 Solvay Conference. Regrets he will be unable to attend. Could submit report about ideas he has developed in recent years; comments on this.
With typescript copy; 1/3 page. W.L. BRAGG/64B/43

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/44  [April/May 1960]

Contents:
Birmingham 12/3 pages, typescript
Will be pleased to come to the 1961 Solvay Conference. June would be more convenient than October; comments on this. Hopes it will not be mainly a review of the past. Present form of quantum theory seems so well consolidated that there seems little room for constructive discussion. [Louis] de Broglie probably does not believe in the consistency of the current interpretation of quantum theory, but he would be in a minority of one. Should follow the tradition of Solvay Conferences and look at ideas which are just emerging. At present they are waiting for revolutionary new ideas. Should have a strong representation of the younger generations; comments on this and suggests people who might be invited. Choice of authors of reports would depend on list of invitations and on topics for discussion.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/45  5 May 1960

Contents:
½ page, typescript
Would welcome Peierls' help in planning [Solvay] conference; comments on this. Is going on a trip around the world from August to December, so the Belgian Secretary, [I.] Prigogine, is to make all arrangements and deal with correspondence. Would like Peierls' help in outlining the subject and making out list of reporters and guests. Is enclosing list of people already invited, a resume of suggestions about guests and reporters, and copies of letters received.

Hideki Yukawa to Lawrence Bragg  W.L. BRAGG/64B/46  23 May 1960

Contents:
Kyoto University 1/3 page, typescript
Thanks Bragg for invitation to the 1961 Solvay Conference. Will try to come; comments on this. Would like to write report on attempts at a theory of elementary particles which could be regarded as extensions or modifications of quantum mechanics.

C. Møller to Lawrence Bragg  W.L. BRAGG/64B/47  2 June 1960

Contents:
Copenhagen 2/3 page, typescript
Acknowledges letter about 1961 Solvay Conference. Agrees with [N.] Bohr's views. Suggests people who might be invited and comments on these. Does not know whether conference is intended to be mainly on the history of quantum physics. Thinks [I.E.] Tamm would be a good substitute for [W.] Pauli. Committee should not be too large but thinks Germany should be represented and suggests [W.] Heisenberg. Would prefer October to June for Conference; comments on this.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/48  2 June 1960

Contents:
¼ page, typescript
Asks for guidance about subjects which might be discussed at the Solvay Conference and about guests. Should write to [I.] Prigogine about this soon. Difficult to organise a conference in fields in which he is not expert.

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/49  8 June 1960

Contents:
Birmingham 21/3 pages, typescript
Suggests people who might be invited to the Solvay Conference and comments on these. Comments on names which he has omitted from list of suggestions. [W.] Heisenberg's suggestions of topics for reports seem very constructive. Comments on possible reports on wave particle dualism and the interpretation of quantum field theory, quantum electrodynamics, casuality, dispersion relations, symmetry properties of fields, and the formalism of field theory. Imagines further ideas will arise from correspondence with prospective delegates.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/50  10 June 1960

Contents:
2/3 page, typescript
Must hand over arrangements for [Solvay] Conference to Prigogine. Is enclosing copies of letter he has received and precis of suggestions which have been made. He could attend conference in June or October. Most people seem to prefer June; comments on this. [N.F.] Mott is willing to give up his place on the committee and suggests [R.E.] Peierls as a substitute. Imagines he should sign the letters of invitation. Would like to get this done by the end of July as he will be leaving London in August.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/51  14 June 1960

Contents:
¼ page, typescript
Thanks Peierls for helpful letter. This and other letters he has received give good basis for the form of the [Solvay] conference. Has sent all the material to [I.] Prigogine. He leaves for his world tour in August. Prigorine is active and has good ideas. Thinks the final arrangements can be safely left in Prigogine's hands.

L. Landau to [Lawrence] Bragg  W.L. BRAGG/64B/52  21 June 1960

Contents:
Moscow 1/3 page, typescript
Thanks Bragg for invitation to the 1961 Solvay Conference. Does not know whether he will be able to attend and will not be able to give a definite answer until a later date.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/53  27 June 1960

Contents:
Warren, Michigan
½ page, typescript
Thanks Bragg for letters and enclosures concerning the next Solvay Conference. He would prefer the second part of October for the Conference; comments on this. Asks if [R.E.] Peierls would work out in more detail the suggestions he has made concerning the invitations and reports. Gives his address during July.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/54  5 July 1960

Contents:
½ page, typescript
Agrees it would be best to hold the [Solvay] Conference in October. Comments on this and on his own commitments. Suggests Prigogine correspond direct with R.E. Peierls concerning final list of invitations and reports for conference; comments on this

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/55  12 July 1960

Contents:
Evanston, Illinois
¼ page, typescript
Is writing to [R.E.] Peierls as Bragg suggested about list of invitations and reports [for 1961 Solvay Conference]. Thinks week of 16 October 1961 would be ideal for conference.

R.P. Feynman to Lawrence Bragg  W.L. BRAGG/64B/56  13 July 1960

Contents:
Pasadena ¼ page, typescript
Should be honoured to attend the Solvay Physics Conference. July 1961 would be more convenient than the October, but both are possible.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/57  3 Aug. 1960

Contents:
Warren, Michigan
1¼ pages, typescript
Has just received letter from [R.E.] Peierls. Peierls maintains the list he suggested in his letter of 8 June to Bragg. Suggest they also invite [Max] Born, [A.] Pais, [L.] Rosenfeld and [L.] van Hove; comments on these. Comments on list of people to be invited and on payment of expenses. It would have been interesting to have the reactions of [Robert] Oppenheimer to the list but does not think there is time for that. Can write to Oppenheimer about the reports and work out a programme which they will submit to Bragg on his return. Alternatively Bragg could write to Oppenheimer and ask him to elaborate the programme; comments on this.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/58  5 Aug. 1960

Contents:
Warren, Michigan
¼ page, typescript
Forgot to include [W.] Heitler on list. Asks if it would be useful for Bragg to have addresses of people listed.

[Lawrence Bragg] to I. Prigogine  W.L. BRAGG/64B/59  8 Aug. 1960

Contents:
½ page, typescript
Impossible for him to send out invitations before he leaves for New Zealand and America. Suggests Prigogine should do this. List seems excellent. Prigogine will be able to consult [Robert Oppenheimer. Has had a particularly busy year; comments on this. Has had two bouts of illness recently. Thinks they already have sufficient acceptances and reports to ensure the success of the Solvay Conference.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/60  22 Oct. 1960

Contents:
Institut International de Physique Solvay, Brussels
¼ page, typescript
Is sending provisional list of participants and list of reports; comments on these. Has sent out invitations.
With enclosures
1. Suggested list of participants, Solvay Conference, 1961; 2½ pages, duplicated. W.L. BRAGG/64B/61
2. Suggested list of reports; ½ page, duplicated. W.L. BRAGG/64B/62

I. Prigogine to Abdus Salam  W.L. BRAGG/64B/63  22 Oct. 1960

Contents:
[Brussels]
1/3 page, typescript; photocopy
Invites Salam to participate in the 1961 Solvay Physics Conference; comments on this.

I. Prigogine to S.A. Afanassiev, USSR Ambassador, Brussels  W.L. BRAGG/64B/64  22 Oct. 1960

Contents:
[Brussels]
½ page, typescript; photocopy; French
Scientific Committee wishes to invite [N.N.] Bogolyubov, [L.D.] Landau and [I.E.] Tamm to the 1961 Solvay Conference in Brussels; comments on this. Professor [A.N.] Nesmyanov is a member of the Scientific Committee.

I. Prigogine to [A.N.] Nesmyanov  W.L. BRAGG/64B/65  22 Oct. 1960

Contents:
[Brussels]
½ page, typescript; photocopy; French
Comments on plans for the 1961 Solvay Physics Conference and on the wish of the Scientific Committee to invite [N.N.] Bogolyubov [L.D.] Landau and [I.E.] Tamm.

N.F. Mott to I. Prigogine  W.L. BRAGG/64B/66  1 Nov. 1960

Contents:
Cambridge
¼ page, typescript; photocopy
Thanks Prigogine for provisional programme of the next Solvay Conference. Doubts whether he will be able to attend.

W. Heitler to I. Prigogine  W.L. BRAGG/64B/67  1 Nov. 1960

Contents:
Zurich
¼ page, typescript; photocopy
Will be delighted to submit a report to the Solvay Conference.

E. Amaldi to I. Prigogine  W.L. BRAGG/64B/68  2 Nov. 1960

Contents:
Rome
¼ page, typescript; photocopy; French
Is pleased to accept invitation to the 1961 Solvay Conference. Will be able to pay travel expenses out of American funds.
Similar letter from Freeman J. Dyson, 3 Nov.: W.L. BRAGG/64B/68a

Abdus Salam to I. Prigogine  W.L. BRAGG/64B/69  3 Nov. 1960

Contents:
London ¼ page, typescript; photocopy
Thanks Prigogine for invitation to the 1961 Solvay Conference. Hopes to be able to attend.

M.L. Goldberger to I. Prigogine  W.L. BRAGG/64B/70  3 Nov. 1960

Contents:
Princeton 1/3 page, typescript; photocopy
Is delighted to accept invitation to the 1961 Solvay Conference and will be pleased to report on Single-variable dispersion relations and their applications. Can arrange payment of his travel expenses.

H. Lehmann to I. Prigogine  W.L. BRAGG/64B/71  7 Nov. 1960

Contents:
Hamburg ¼ page, typescript; photocopy
Is pleased to accept invitation to the Solvay Conference.

Gregor Wentzel to I. Prigogine  W.L. BRAGG/64B/72  7 Nov. 1960

Contents:
Chicago ¼ page, typescript; photocopy
Pleased to accept invitation to Solvay Conference in October 1961. Hopes to obtain travel grant from the U.S. Atomic Energy Commission.

Max Born to I. Prigogine  W.L. BRAGG/64B/73  8 Nov. 1960

Contents:
Bad Pyrmont
1/3 page, typescript; photocopy
Was surprised to receive invitation to the next Solvay Conference. Has not been invited for many years and only took part in the 1928 Conference on quantum mechanics. Thinks it unfortunate he had no opportunity of contributing to the conferences when he was still doing research. Could not participate in long discussions and wonders whether there would be any point in his appearing for short periods. Would enjoy meeting Prigogine.

L. Rosenfeld to I. Prigogine  W.L. BRAGG/64B/74  9 Nov. 1960

Contents:
Copenhagen
¼ page, typescript; photocopy; French
Will be pleased to take part in the next Solvay Conference.

A.S. Wightman to I. Prigogine  W.L. BRAGG/64B/75  9 Nov. 1960

Contents:
Princeton ¼ page, typescript; photocopy
Pleased to accept invitation to the 1961 Solvay Conference. Does not know if he will be able to get grant for travel expenses.

Eugene P. Wigner to I. Prigogine  W.L. BRAGG/64B/76  10 Nov. 1960

Contents:
Princeton ¼ page, typescript; photocopy
Pleased to accept invitation to 1961 Solvay Conference. Will write later about travel plans and expenses.

I. Prigogine to Max Born  W.L. BRAGG/64B/77  14 Nov. 1960

Contents:
Brussels 1/3 page, typescript; phtotoc
1/3 page, typescript; photocopy; French
Acknowledges letter of [8] November. Understands reasons why Born hesitates to accept invitation to Solvay Conference. Hopes Born and his wife will attend. Born's important role in the development of quantum mechanics and the significance of the anniversary makes his presence particularly desirable.

A. Pais to [I.] Prigogine  W.L. BRAGG/64B/78  16 Nov. [1960]

Contents:
Berkeley ½ page, MS; photocopy
Hopes to be able to participate in the [Solvay Conference] 1961. Should be able to find funds for travel expenses.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/79  22 Nov. 1960

Contents:
1/3 page, typescript
Pleased arrangements for the [Solvay] Conference are well in hand. Next big task is to ensure that people send in reports in time for them to be reproduced and circulated. Has just returned from world tour; comments on this.

Murray Gell-Mann to I. Prigogine  W.L. BRAGG/64B/80  23 Nov. 1960

Contents:
Pasadena 1/3 page, typescript; photocopy
Will be pleased to attend the Solvay Conference and give a report. Symmetry properties of fields is not a very exciting subject at present. Would prefer to discuss field theory and high energy phenomena.

Gian Carlo Wick to I. Prigogine  W.L. BRAGG/64B/81  23 Nov. 1960

Contents:
Brookhaven National Laboratory
¼ page, typescript; photocopy
Hopes to be able to attend the Solvay Conference. Will try to get grant for travel expenses.

Gunnar Källén to I. Prigogine  W.L. BRAGG/64B/82  25 Nov. 1960

Contents:
Lund
¼ page, typescript; photocopy
Will be pleased to attend the Solvay Conference and to present a report. Asks how much time will be allotted to his talk.

M. Cini to I. Prigogine  W.L. BRAGG/64B/83  26 Nov. 1960

Contents:
Rome
¼ page, typescript; photocopy
Will be pleased to attend the Solvay Conference and to participate in the discussion of progress in quantum field theory.

R.P. Feynman to I. Prigogine  W.L. BRAGG/64B/84  30 Nov. 1960

Contents:
Pasadena
¼ page, typescript; photocopy
Will be pleased to prepare report on quantum electrodynamics for the 1961 Solvay Conference.

T.D. Lee to I. Prigogine  W.L. BRAGG/64B/85  2 Dec. 1960

Contents:
Princeton ¼ page, typescript; photocopy
Will be able to attend the next Solvay Physics Conference.

C.N. Yang to I. Prigogine  W.L. BRAGG/64B/86  6 Dec. 1960

Contents:
Princeton ¼ page, typescript; photocopy
Will be pleased to take part in the 1961 Solvay Conference. Thinks he will be able to obtain financial support.

P.A.M. Dirac to [I.] Prigogine  W.L. BRAGG/64B/87  7 Dec. 1960

Contents:
¼ page, MS; photocopy
Hopes to be able to attend the 1961 Solvay Conference.

C. Møller to [I.] Prigogine  W.L. BRAGG/64B/88  13 Dec. 1960

Contents:
Copenhagen ¼ page, typescript; photocopy
Thanks Prigogine for list of suggested participants in [Solvay] Conference. Suggests that Oscar Klein also be invited; comments on this. Is looking forward to seeing Prigogine at the Conference.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/89  13 Dec. 1960

Contents:
Institut International de Physique Solvay, Brussel
2½ pages, typescript
Is sending copies of correspondence. Where travelling involves transoceanic travel, has asked participants to try to find local financial support. If they are unable to do this, the Institute will pay expenses. Lists participants, noting answer, if one has been received, to invitation to attend [1961 Solvay Conference]. Lists people who have not replied and asks Bragg to write to them. Has had firm promises of reports from everyone except [L.D.] Landau and [S.] Mandelstam. Asks Bragg to write to reporters to give deadline for delivery of their manuscripts. Refers to situation concerning [Max] Born, [M.] Gell-Mann's wish to change subject of report, and [G.] Kâllen's query about length of report. Suggests people who might be invited if some of those already invited cannot come.

Hans A. Bethe to I. Prigogine  W.L. BRAGG/64B/90  28 Dec. 1960

Contents:
Cornell University
¼ page, typescript; photocopy
Will be pleased to attend Solvay Conference in October 1961. Possible that his travel expenses will be paid out of a government contract.

Lawrence Bragg to H.A. Bethe  W.L. BRAGG/64B/91  30 Dec. 1960

Contents:
¼ page, typescript
[I.] Prigogine has written to tell him of response to invitations to the Solvay Conference, October 1961. Prigogine has not heard from Bethe. It would be helpful to know as soon as possible whether Bethe will be able to come.
Similar letters, 30 Dec. 1960, to N.N.Bogolyubov, G. Chew, L.D. Landau, F.E. Low, S. Mandelstam, J. Schwinger, I.E. Tamm and S. Tomonaga. W.L. BRAGG/64B/92-99

Julian Schwinger to I. Prigogine  W.L. BRAGG/64B/100  1 Jan. 1961

Contents:
Harvard University
1/3 page, MS; photocopy
Hopes to attend Solvay Conference in October 1961.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/101  2 Jan. 1961

Contents:
¼ page, typescript
Is enclosing copies of letters he has sent. Has given the reporters an opportunity to duplicate their own reports. Thanks Prigogine for businesslike way in which he is handling the arrangements [for Solvay Conference].

Lawrence Bragg to R.P. Feynman  W.L. BRAGG/64B/102  2 Jan. 1961

Contents:
1/3 page, typescript
Delighted Feynman is prepared to give report to the Solvay Conference. [I.] Prigogine would like to have the typescript three months before the meeting, so that it can be duplicated and circulated. Asks Feynman to let him know it he would prefer to duplicate his report himself; comments on this.
Similar letter, 2 Jan. 1961, to M. Gell-Mann, M.L.Goldberger, W. Heitler, G. Källen and H.K. Yukawa. W.L. BRAGG/64B/103-107

[Lawrence Bragg] to N. Bohr  W.L. BRAGG/64B/108  2 Jan. 1961

Contents:
½ page, typescript
They are looking forward to seeing Bohr at the Solvay Conference Pleased Bohr is to give an introductory account [of quantum physics]; comments on this. [I.] Prigogine would like the typescript three months before the meeting, so it can be duplicated and circulated. Asks Bohr to let him know it he would prefer to duplicate the report himself; comments on this.

Geoffrey F. Chew to Lawrence Bragg  W.L. BRAGG/64B/109  5 Jan. 1961

Contents:
Berkeley ¼ page, typescript
Hopes to be able to attend Solvay Conference. Is making enquiries about payment of travel expenses.

Francis E. Low to I. Prigogine  W.L. BRAGG/64B/110  6 Jan. 1961

Contents:
Massachusetts Institute of Technology
1/3 page, typescript; photocopy
Hopes to attend Solvay Conference. Hopes to spend 1961 in Rome and the timing of the conference raises some problems. Will write as soon as these problems have been sorted out.

Nadine Galland to Lawrence Bragg  W.L. BRAGG/64B/111  11 Jan. 1961

Contents:
Institut International de Physique Solvay, Brussel
¼ page, typescript
Is enclosing copies of letters from [H.A.] Bethe and [J.] Schwinger, who both hope to attend the Solvay Conference.

S. Mandelstam to Lawrence Bragg  W.L. BRAGG/64B/112  14 Jan. 196[1]

Contents:
Birmingham
¼ page, typescript
Apologises for delay in replying to invitation to Solvay Conference. Has written to [I.] Prigogine thanking for invitation and saying he would be pleased to present report.

S. Mandelstam to I. Prigogine  W.L. BRAGG/64B/113  14 Jan. 196[1]

Contents:
Birmingham
1/3 page, typescript; photocopy
Apologises for delay in replying to invitation to Solvay Conference. Is pleased to accept invitation. Will be pleased to present report on Two-dimensional representation of scattering amplitude and their applications.

Sin-itiro Tomonaga to I. Prigogine  W.L. BRAGG/64B/114  17 Jan. 1961

Contents:
Tokyo ¼ page, typescript; photocopy
Is honoured to be invited to the Solvay Conference in October 1961. Does not yet know whether the Japan Science Council will pay his travel expenses, but will write again when this question has been settled.

M.L. Goldberger to Lawrence Bragg  W.L. BRAGG/64B/115  19 Jan. 1961

Contents:
Princeton 1/3 page, typescript
Will duplicate his report for the Solvay Conference. Would like an idea of the appropriate length of the report. Would like to talk for about an hour on dispersion theory.

Secretary to Lawrence Bragg to I. Prigogine  W.L. BRAGG/64B/116  23 Jan. 1961

Contents:
[London] ¼ page, typescript
Is enclosing copy of letter from [M.L.] Goldberger. Sir Lawrence would be grateful if Prigogine would send Goldberger the information he wants.

Nadine Galland to Lawrence Bragg  W.L. BRAGG/64B/117  25 Jan. 1961

Contents:
Institut International de Physique Solvay, Brussel
¼ page, typescript & MS
Is sending copies of letters from [S.] Mandelstam, [F.E.] Low and [Sin-itiro] Tomonaga. Mandelstam and Low expect to attend the Solvay Conference.

N. Bogolubov to Lawrence Bragg  W.L. BRAGG/64B/118  [Feb. 1961]

Contents:
¼ page, typescript
Hopes to be able to attend the Solvay Conference.

Sin-itiro Tomonaga to [Lawrence] Bragg  W.L. BRAGG/64B/119  2 Feb. 1961

Contents:
¼ page, typescript
A few weeks ago, wrote to tell [I.] Prigogine he was honoured to be invited to the Solvay Conference. Is asking the Japanese Science Council for grant. Would welcome opportunity of discussions with so many eminent physicists.

I. Tamm to Lawrence [Bragg]  W.L. BRAGG/64B/120  3 Feb. 1961

Contents:
1/3 page, typescript
Thanks him for invitation to the Solvay Conference. Has been in Germany. Hopes to be able toaattend the conference but at present cannot say definitely if this will be possible.

J. Walch to Lawrence Bragg  W.L. BRAGG/64B/121  22 Feb. 1961

Contents:
Brussels ¼ page, typescript; French
Acknowledges receipt of letter to M. Solvay. This will be given to Solvay when he returns in March.

L. Landau to [Lawrence] Bragg  W.L. BRAGG/64B/122  25 Feb. 1961

Contents:
Moscow ¼ page, typescript
Regrets he will not be able to attend the 1961 Solvay Conference. Thanks Bragg for invitation.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/123  1 March 1961

Contents:
¼ page, typescript
Asks Prigogine to confirm that the Solvay Conference will be held in week beginning 9th October; comments on this.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/124  8 March 1961

Contents:
½ page, typescript
Is enclosing letter he has received from [L.] Landau. It is unfortunate Landau cannot attend the Solvay Conference. He needs to become conversant with arrangements for Conference. Thanks Prigogine for carrying on with the arrangements so efficiently. Suggests Prigogine visit London so they can discuss plans; comments on this.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/125  10 March 1961

Contents:
1/3 page, typescript
Is aiming at crystallising plans for the Solvay Conference. [I.] Prigogine has carried on alone for a long time; comments on this. Has suggested Prigogine visit London so they can discuss arrangements. Would be grateful if Peierls could join them; comments on this.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/126  14 March 1961

Contents:
½ page, typescript
Pleased Prigogine can come on Saturday; comments on this. [R.E.] Peierls cannot come to London at the weekend, but Prigogine could go to see Peierls on Sunday; comments on this.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/127  16 March 1961

Contents:
2/3 page, typescript
[I.] Prigogine is not coming at weekend. Is enclosing list of those who will attend [Solvay Conference]. Comments on others who might be invited. Comments on reports to be given.

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/128  28 March 1961

Contents:
Birmingham 1¼ pages, typescript
Comments on additional people who might be invited [to Solvay Conference]. Comments on the order of the reports. Asks if there could be a report on weak interactions; comments on this.

[Lawrence] Bragg to Ernest Solvay  W.L. BRAGG/64B/129  28 March 1961

Contents:
½ page, typescript
Would like to resign as President [of the Solvay Physics Conference]; comments on this.

A.F.Annand, Sec. to Lawrence Bragg, to R.E. Peierls  W.L. BRAGG/64B/130  29 March 1961

Contents:
[Royal Institution]
¼ page, typescript
Acknowledges letter of 28 March.

A.F. Annand, Sec. to Lawrence Bragg, to I. Prigogine  W.L. BRAGG/64B/131  29 March 1961

Contents:
[Royal Institution]
¼ page, typescript
Is enclosing copy of letter from [R.E.] Peierls about the Solvay Conference.

[A.F.Annand], Sec. to Lawrence Bragg, to I. Prigogine  W.L. BRAGG/64B/132  12 April 1961

Contents:
[Royal Institution]
¼ page, typescript
Is enclosing copy of letter from [Niels] Bohr about the Solvay Conference.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/133  12 April 1961

Contents:
Brussels ½ page, typescript
Comments on people who might be invited to [Solvay Conference]. [R.E.] Peierls' suggestions about the order of reports seems all right. Thinks it may be too late to ask for report on weak interactions, but might write to ask [C.N.] Yang or [T.D.] Lee to prepare something. Thinks they should ask people to submit reports by 1st June.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/134  17 April 1961

Contents:
Brussels ¼ page, typescript
Is leaving for U.S.A. His Secretary, Miss Galland, will continue preparations for the Solvay Conference. He will be back at the end of August.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/135  26 April 1961

Contents:
½ page, typescript
Is enclosing copies of letters he has sent to [Y.] Nambu and [O.B.] Klein. Asks Prigogine to write to ask people to send in reports by 1st June and to write to [C.N.] Young or [T.D.] Lee to ask for report on weak interactions. Should invite various members of the [Solvay] Conference to take the Chair; comments on this.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/136  26 April 1961

Contents:
¼ page, typescript
Is enclosing copy of letter from [I.] Prigogine. Has sent invitations to [Y.] Nambu and [O.B.] Klein.

[Lawrence] Bragg to O.B. Klein  W.L. BRAGG/64B/137  26 April 1961

Contents:
1/3 page, typescript
Invites Klein to attend Solvay Physics Conference to be held in Brussels in week of 9 October; discusses this.

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/138  1 May 1961

Contents:
Birmingham ½ page, typescript
Is pleased that invitations [to Solvay Conference] are being sent to Y.Nambu and [O.B.] Klein. Gives Nambu's address. Thinks it would be worth asking [C.N.] Yang or [T.D.] Lee to prepare report on weak interaction; comments on this.

[Lawrence] Bragg to Miss [N.] Galland  W.L. BRAGG/64B/139  2 May 1961

Contents:
¼ page, typescript
Asks her to forward enclosed letter to [I.] Prigogine.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/140  2 May 1961

Contents:
2/3 page, typescript
Has sent invitations to [Y.] Nambu and [O.B.] Klein; comments on this. Is enclosing copy of letter from [R.E.] Peierls. Asks Prigogine to make arrangements with [C.N.] Yang or [T.D.] Lee for opening of discussion on weak interaction. Has decided to resign as President [of Solvay Physics Conference] after 50th anniversary meeting; comments on this.

[Lawrence] Bragg to Y. Nambu  W.L. BRAGG/64B/141  3 May 1961

Contents:
½ page, typescript
Invites Nambu to attend Solvay Physics Conference to be held in Brussels in week of 9 October; discusses this.

Oskar Klein to Lawrence Bragg  W.L. BRAGG/64B/142  9 May 1961

Contents:
Stockholm ¼ page, typescript
Is pleased to accept invitation to Solvay Physics Conference.

Yoichiro Nambu to Lawrence Bragg  W.L. BRAGG/64B/143  11 May 1961

Contents:
Chicago ¼ page, typescript
Hopes to attend the Solvay Physics Conference. Hopes to be able to get grant for travel expenses.

[A.F.Annand], Sec. to Lawrence Bragg, to Miss [N.] Galland  W.L. BRAGG/64B/144  11 May 1961

Contents:
[Royal Institution]
¼ page, typescript
Is enclosing copy of letter from [Oskar] Klein.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/145  18 May 1961

Contents:
Chicago 2/3 page, typescript
Pleased Bragg has sent invitations to [Y.] Nambu and [Oskar] Klein; comments on this. Has written to [C.N.] Yang to ask if he or [T.D.] Lee, or both, would prepare short report on weak interactions. Will remind Miss Galland to ask people to submit reports by 1st June. Thinks [R.E.] Peierls would be the person to suggest people to take the Chair at [Solvay] Conference. Regrets that Bragg wants to resign as President.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/146  23 May 1961

Contents:
¼ page, typescript
Is enclosing copy of letter from [I.] Prigogine. Would be grateful if Peierls would suggest Chairmen for meetings [of Solvay Physics Conference]. Comments on arrangements for conference.

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/147  30 May 1961

Contents:
Birmingham 2¼ pages, typescript
Comments on arrangement for programme [of Solvay Conference] and on sequence of reports. Suggests people who might take Chair at various sessions and comments on this. [I.] Prigogine's letter to [S.] Mandelstam did not make it clear that reporters would not present reports in full at meetings; comments on this.

C.N. Yang to I. Prigogine  W.L. BRAGG/64B/148  30 May 1961

Contents:
Stanford University
¼ page, typescript; photocopy
Will be pleased to make brief report on weak interactions.

S. Fieldhouse to Secretary to Sir Lawrence Bragg  W.L. BRAGG/64B/149  31 May 1961

Contents:
Cambridge ¼ page, typescript
N.F. Mott would like to know the subject of the Solvay Conference in October.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/150  31 May 1961

Contents:
2/3 page, typescript
Is enclosing copy of letter from [R.E.] Peierls. Comments on arrangements for the [Solvay] Conference and suggests they draw up a tentative programme. Agrees with Peierls that they should avoid putting people in the Chair at sessions in which those people are likely to get involved in arguments. He would like to take Chair at opening session when [Niels] Bohr makes his report. Agrees that reporters should not be asked to act as Chairmen. Thinks it is valuable at meetings for the reporters to go fully into main points of their papers.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/151  31 May 1961

Contents:
¼ page, typescript
Has sent Peierls' letter to [I.] Prigogine. Is enclosing copy of letter he has sent to Prigogine. Generally only have a morning session on the Wednesday [of Solvay Conference.

R.E. Peierls to Lawrence Bragg  W.L. BRAGG/64B/152  1 June 1961

Contents:
Birmingham 1¼ pages, typescript
If reporters at Solvay Conference intend to give full explanation of their material, there would he no need for reports to be prepared and circulated in advance. Discusses this this and the way in which reports should be used.

[Lawrence] Bragg to R.E. Peierls  W.L. BRAGG/64B/153  2 June 1961

Contents:
¼ page, typescript
Must make sure reports [for Solvay Conference] are circulated early. Thinks they agree about the reports. He is trying to steer a middle course. Helpful if reporters summarize the main points; "their personality and the emphasis they can place on points are valuable".

[Lawrence] Bragg to N. [F.] Mott  W.L. BRAGG/64B/154  2 June 1961

Contents:
¼ page, typescript
Note about the Solvay Conference was sent to Mott last October. Is enclosing copy. Hopes Mott will be able to come. [R.E.] Peierls has been very helpful and [I.] Prigogine is an excellent secretary.

Murray Gell-Mann to Lawrence Bragg  W.L. BRAGG/64B/155  13 June 1961

Contents:
Pasadena 1/3 page, typescript
Asks if he may change the title of his Solvay Conference talk back to that originally suggested, Symmetry properties of fields

[Lawrence Bragg] to Murray Gell-Mann  W.L. BRAGG/64B/156  19 June 1961

Contents:
Royal Institution
¼ page, typescript
Has sent Gell-Mann's letter to [I.] Prigogine, who will make alteration to title of Gell-Mann's [report to Solvay Conference]

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/157  19 June 1961

Contents:
½ page, typescript
Is sending letter from [Murray] Gell-Mann. Assumes there is time to alter title of Gell-Mann's talk. Agrees with choice of Chairmen. Thinks he should take Chair on the Monday morning. Asks if [Max] Born will be coming.

A.F. Annand, Sec. to Lawrence Bragg, to Miss [N.] Galland  W.L. BRAGG/64B/158  20 June 1961

Contents:
[Royal Institution]
2/3 page, typescript
Gives details of programme [for Solvay Conference], which Bragg has approved. [Murray] Gell-Mann has asked if title of his talk could be changed to Symmetry properties of fields.

Nadine Galland to Lawrence Bragg  W.L. BRAGG/64B/159  24 June 1961

Contents:
Institut International de Physique Solvay, Brussels
¼ page, typescript
Acknowledges letter of 20 June about programme for the Solvay Conference. Asks if Lady Bragg will be accompanying Bragg to Brussels.

[Lawrence] Bragg to Miss N. Galland  W.L. BRAGG/64B/160  27 June 1961

Contents:
¼ page, typescript
His wife will accompany him to Brussels. On some previous occasions they have been guests of Ernest Solvay. Asks her to reserve accomodation for them. If Mr Solvay invited them, will let her know.

[Niels] Bohr  W.L. BRAGG/64B/161  28 Aug. 1961

Contents:
11¾ pages, typescript; photocopy
The Solvay Meetings and the development of quantum physics.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/162  3 Sept. 1961

Contents:
Institut International de Physique Solvay, Brussels
2/3 page, typescript; French
The Free University of Brussels will confer Honorary Doctorates on [N.] Bohr, [M.] Born and [P.] Dirac on 11th October. Invites Bragg to give speech on this occasion. Comments on this and on programme for the ceremony.

Nadine Galland to Lawrence Bragg  W.L. BRAGG/64B/163  23 [Sept.] 1961

Contents:
Institut International de Physique Solvay
1/3 page, typescript
Comments on hotel reservations made for Bragg and on arrangements for the [Solvay] Conference.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/164  3 Oct. 1961

Contents:
1/3 page, typescript
Was pleased to have talk with Prigogine and looks forward to meeting him on Sunday. Thinks it is time for him to resign as President [of Solvay Physics Conference]; comments on this.

[Lawrence] Bragg to Niels Bohr  W.L. BRAGG/64B/165  3 Oct. 1961

Contents:
¼ page, typescript
Thanks Bohr for draft of speech. Could not have a better start to [Solvay] Conference.

Solvay Physics Conference  W.L. BRAGG/64B/166-169  October 1961

Contents:
List of participants; 3¼ pages, duplicated. List of members of the Scientific Committee; ½ page, duplicated. List of suggested participants; 22/3 pages, duplicated. List of Solvay Conferences, 1911-1961; ½ page, typescript & MS.

[Lawrence Bragg]  W.L. BRAGG/64B/170  [Oct. 1961]

Contents:
[Brussels] 3½ pages, typescript; French
Speech about the Solvay Physics Conferences and their 50th Anniversary.
With draft, 3½ pages, typescript & MS, and English version, 1¾ pages, typescript. W.L. BRAGG/64B/171-172

A. Pais  W.L. BRAGG/64B/173  1961

Contents:
Princeton 23½ pages, typescript
Weak interactions. Report for the 12th Solvay Conference, October 1961.

[Lawrence] Bragg to Harrie Massey  W.L. BRAGG/64B/174  16 Oct. 1961

Contents:
1/3 page, typescript
Has just returned from Solvay Conference. Has been President of the last five conferences. The subject of the last conference, field theory, was quite beyond him. Thought some of Massey's young theoretical physicists might like to see the enclosed reports of the conference.

[Lawrence] Bragg to Felix Leblanc  W.L. BRAGG/64B/175  17 Oct. 1961

Contents:
½ page, typescript
Thanks Leblanc for his hospitality in Brussels. Comments on the [Solvay] Physics Conference. Could not have a better secretary than [I.] Prigogine. Comments on his own decision to retire as President of the Physics Conference.

N.F. Mott to Lawrence Bragg  W.L. BRAGG/64B/176  8 Nov. 1961

Contents:
Cambridge ¼ page, typescript
Thanks Bragg for album of photographs commemorating the 50th anniversary of the Solvay Conferences.

F. Leblanc to Lawrence Bragg  W.L. BRAGG/64B/177  9 Nov. 1961

Contents:
Brussels 1/3 page, typescript
Thanks Bragg for letter of 17 October. Pleased he was satisfied with organisation of the 12th [Solvay] Physics Conference. Sorry Bragg has decided to retire as President. Thanks Bragg for all he has done for the Solvay meetings. Pleased Bragg is willing to remain a member of the Scientific Committee.

[Lawrence] Bragg to I. Prigogine  W.L. BRAGG/64B/178  10 Nov. 1961

Contents:
¼ page, typescript
Thanks Prigogine for photographs. Is enclosing copy of letter he has received from [N.F.] Mott.

I. Prigogine to Lawrence Bragg  W.L. BRAGG/64B/179  30 Nov. 1961

Contents:
Institut International de Physique Solvay
1/3 page, typescript; French
Expresses regret of the Administrative Committee of the Institute at Bragg's resignation as President of the Scientific Committee and thanks him for all he has done for the Solvay Physics Conferences. The Committee is pleased Bragg will remain a member of the Scientific Committee.

Field Survey Association (sound ranging): Correspondence, minutes, reports  W.L. BRAGG/65A  1919-May 1939

F.Stratton to [Lawrence] Bragg  W.L. BRAGG/65A/1  14 Aug. 1919

Contents:
Gonville & Caius College, Cambridge
¾ page, MS
Not clear how matter stands about the sound ranging section. Asks if Bragg has any suitable person in mind for subaltern or sergeant.

E.M.Jack to [Lawrence] Bragg  W.L. BRAGG/65A/2  20 Oct. 1919

Contents:
War Office 3 pages, MS
Is enclosing syllabus for the sound ranging mobile course; discusses this. Asks for clarification. Asks if Bragg has received the "History" yet.

E.M.Jack to [Lawrence] Bragg  W.L. BRAGG/65A/3  22 Oct. 1919

Contents:
Geographical Section, War Office
1¼ pages, typescript
Is sending proofs of the sound ranging text book; comments on these and asks Bragg to make any further corrections necessary.

E.M.Jack to [Lawrence] Bragg  W.L. BRAGG/65A/4  23 Oct. 1919

Contents:
War Office 2 pages, MS
[-?-] Reid and [-?-] James cannot find the film at Larkhill. Asks whether another film should be taken. If so, asks Bragg to get James to arrange this with Reid.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65A/5  22 April 1929

Contents:
Liverpool 11/3 pages, typescript
Thinks they should have Council meeting soon and meet the new members nominated by the War Office. War Office will want a lot of new people in the [Sound Ranging] Association to provide a reserve to call on in the event of a national emergency. Comments on possible members. Asks Bragg to suggest dates for meeting. Would welcome ideas for agenda. Asks for name of C.P.R. boat on which Bragg's brother-in-law is working.

[Lawrence Bragg] to [A.J.] Philpot  W.L. BRAGG/65A/6  11 March 1929

Contents:
¼ page, typescript
F.C.Andrews has asked if he might use his (Bragg's) name as a reference. Asks Philpot for some information about Andrews.

[Lawrence Bragg] to [C.M.] Mason  W.L. BRAGG/65A/7  7 May 1929

Contents:
1/3 page, typescript
Comments on the Field Survey Association. War Office wants new members to be enrolled so as to provide a nucleus of men of scientific bent who would be available in an emergency. Would like to discuss the matter with Mason to see how it could be worked in with the O.T.C. Is enclosing some documents about the Association.

Field Survey Association (A.H.Pullan) to [Lawrence Bragg]  W.L. BRAGG/65A/8  6 June 1929

Contents:
Savoy Place, London
1 page, duplicated
Gives details of programme for visit of the Association to a demonstration by the School of Artillery at Larkhill.
With list of members taking part in visit: 1 page, duplicated; W.L. BRAGG/65A/9

[Lawrence Bragg] to [G.T.] McCaw  W.L. BRAGG/65A/10  9 May 1929

Contents:
1/3 page, typescript
Will come to meeting on Wednesday. Will write after he has seen Mason about new members [of Field Survey Association].

[Lawrence Bragg] to [G.T.] McCaw  W.L. BRAGG/65A/11  20 June 1929

Contents:
1/3 page, typescript
Will keep [-?-] Poole in mind. Would like further information about Poole's career to help him should a suitable post turn up.

A.H.Atkins to J.M.Nuttall  W.L. BRAGG/65A/12  9 Oct. 1929

Contents:
Liverpool ¾ page, typescript
Next meeting of the Field Survey Association will be on 9th November. In next war, wind sections may not be a practical proposition. Need to devise simpler method of getting wind and temperature corrections. Comments on this and asks Nuttall to talk to Bragg about it.
With diagram showing microphone positions: 1 page, MS.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65A/13  11 Oct. 1929

Contents:
London 2/3 page, typescript
Would like to see Bragg again. Admiral Douglas and Colonel Brooke will speak at the Field Survey dinner. Should try to get some of the O.T.C. people from Oxford and Cambridge.

Field Survey Association (A.H.Atkins) to members  W.L. BRAGG/65A/14  14 Oct. 1929

Contents:
War Office ¾ page, duplicated
Gives details of arrangements for the Annual General Meeting and Dinner of the Association.
With:-
a) Agenda for A.G.M.: 1 page, duplicated; W.L. BRAGG/65A/15, and amended copy: 1 page, duplicated; W.L. BRAGG/65A/16.
b) Proposed Constitution of the Association: 3 2/3 pages, duplicated, with MS notes added [by Lawrence Bragg]; W.L. BRAGG/65A/17.
c) Report of the Hon. Secretary: 1 page, duplicated; W.L. BRAGG/65A/18.

[Lawrence Bragg] to [C.W.] Mason  W.L. BRAGG/65A/19  15 Oct. 1929

Contents:
¼ page, typescript
Invites Mason to attend the Field Survey Association's dinner as his guest.

C.W.Mason to [Lawrence] Bragg  W.L. BRAGG/65A/20  17 Oct. 1929

Contents:
Manchester University ½ page, MS
Accepts invitation to dinner. Will be pleased to learn more about the [Field Survey] Association.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65A/21  17 Oct. 1929

Contents:
London 1¼ pages, typescript
Feels it is time to make special efforts to extend the membership of the Field Survey Association. Comments on meeting with Garrod and Wingate Gray at Oxford. They suggested Lindemann be asked to take up question of starting Field Survey Unit in the O.T.C. at Oxford; comments on this. [ ] McLeod is to consult General Swinton about the matter. Asks whom Bragg thinks would be the best people to consult at Cambridge; should try to get a few people to come to the dinner. Comments on possibility of his visiting Manchester.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65A/22  18 Oct. 1929

Contents:
Liverpool 1 1/3 pages, typescript
Gives details of arrangements for the [Field Survey Association's] dinner. Comments on organisation of the technical discussion at the A.G.M. Will be in Newfoundland at time of the dinner. McLeod thinks the professional soldier will want ideas by which the number of microphones would be decreased.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65A/23  21 Oct. 1929

Contents:
Cornhill, London ½ pages, typescript
Will try to visit Manchester on 2nd. Neither Sir Charles Close nor [General] Swinton can attend [Field Survey Assoc.'s] dinner. They are asking [ ] Wilson, the Inspector of Artillery. Asks Bragg to find out whether [ ] Clayton would speak at the dinner.

[Lawrence Bragg] to [F.] Stratton  W.L. BRAGG/65A/24  21 Oct. 1929

Contents:
½ page, typescript
Comments on Field Survey Association and invites Stratton to attend their dinner as his guest. Some of the members would like to consult Stratton about the best way of getting the company's work continued by younger men from the universities.

F.Stratton to [Lawrence] Bragg  W.L. BRAGG/65A/25  22 Oct. 1929

Contents:
Cambridge 1¼ pages, MS
Should be pleased to come to dinner [of Field Survey Assoc.]. Suggests Bragg invite J.A.Ratcliffe who has taken command of the Survey Company of the O.T.C. and is anxious to get sound ranging started.

R.S.S. [?] Mitchell to [Lawrence] Bragg  W.L. BRAGG/65A/26  23 Oct. 1929

Contents:
London ½ page, typescript
McCaw has suggested he, Mitchell, be proposed as a member of the council of the Field Survey Association. Would like some information about the way the Association is going. Is not interested if all the old crowd are going to fade away. [A.J.] Philpot agrees with him.

[Lawrence Bragg] to [J.A.] Ratcliffe  W.L. BRAGG/65A/27  24 Oct. 1929

Contents:
½ page, typescript
Comments on the Field Survey Association and invites Ratcliffe to attend the Association's Annual Dinner as his guest. Comments on the speakers at the dinner.

[Lawrence Bragg] to [Harold] Hemming  W.L. BRAGG/65A/28  24 Oct. 1929

Contents:
½ page, typescript
Delighted Hemming is to visit him on 2nd; comments on trains. Comments on guests he has invited to [Field Survey Assoc.] dinner. Can ask Ratcliffe what he thinks about extending membership of the Association at Cambridge.

[Lawrence Bragg] to [F.] Stratton  W.L. BRAGG/65A/29  24 Oct. 1929

Contents:
¼ page, typescript
Delighted Stratton can come. Has also invited Radcliffe [to Field Survey Assoc. dinner].

Harold [Hemming] to [W.L.] Bragg  W.L. BRAGG/65A/30  25 Oct. 1929

Contents:
London 1 page, typescript
Will wire Bragg about train he plans to get. Thinks Bragg is doing excellent job with Cambridge [F.S.A.]. Is not relishing job of being in chair at the dinner.

J.A.Ratcliffe to [W.L.] Bragg  W.L. BRAGG/65A/31  26 Oct. 1929

Contents:
Cambridge ½ page, MS
Will be delighted to come to the Survey dinner.

A.H. Atkins to W.L. BRAGG  W.L. BRAGG/65A/32  28 Oct. 1929

Contents:
Liverpool 2/3 page, typescript
Is leaving for Newfoundland. If Bragg has a subject he thinks would be of more interest to the [Field Survey] Association than a discussion of wind and temperature corrections, he should inform Hemming. Asks Bragg to tell Hemming of anyone else who should have powerful information on the subject. Hopes to visit Bragg when he returns from Newfoundland.

[W.L. BRAGG] to [R.S.S.] Mitchell  W.L. BRAGG/65A/33  28 Oct. 1929

Contents:
2/3 page, typescript
Hopes Mitchell will join Council [of Field Survey Assoc.]. Would be sorry if Mitchell's interest waned although he can understand his doubts about the direction the Association is to take; comments on this.

[W.L. BRAGG] to [Harold] Hemming  W.L. BRAGG/65A/34  30 Oct. 1929

Contents:
1¼ pages, typescript
Quotes extracts from Atkins' letter concerning the discussions planned at the Field Survey Association meeting. Asks if Hemming could arrange something on the lines suggested. Might get people who did sound ranging in the war to give their version of the main problems encountered and get the people from Salisbury Plain to say how they are meeting these difficulties; comments on this. He would not mind giving short history of sound ranging.

Field Survey Association (G.T.McCaw, Hon.Sec.)  W.L. BRAGG/65A/35  31 Oct. 1929

Contents:
1¼ pages, duplicated
Minutes of meeting of the Council of the Association held at the War Office on 15th October 1929.

[W.L. BRAGG] to [Harold] Hemming  W.L. BRAGG/65A/36  4 Nov. 1929

Contents:
¼ page, typescript
Has invited Lindemann to dinner as guest of the [Field Survey] Association. Has asked Stratton to speak. Mason will take part in discussion and will ask Ratcliffe to do so too.

[W.L. BRAGG] to [J.A.] Ratcliffe  W.L. BRAGG/65A/37  4 Nov. 1929

Contents:
¼ page, typescript
Invites Ratcliffe to attend discussion after the business meeting of the [Field Survey Association] on 9 November. Comments on this.

[W.L. BRAGG] to [F.] Stratton  W.L. BRAGG/65A/38  4 Nov. 1929

Contents:
1/3 page, typescript
Keen to explore ways of getting men at Universities interested in survey work and of getting new blood into the [Field Survey] Association. They are to discuss this after the A.G.M. Invites Stratton to come to the discussion; comments on this.

F.A.Lindemann to W.L. BRAGG  W.L. BRAGG/65A/39  5 Nov. 1929

Contents:
Oxford 1/3 page, typescript
Regrets he is unlikely to be able to get to London on 9th to attend dinner.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65A/40  5 Nov. 1929

Contents:
London ¼ pages, typescript
Thanks Bragg and his wife for enjoyable weekebd. Discusses speakers at the Field Survey Association meeting. Bragg's father has agreed to propose the toast to the Association.

[W.L. BRAGG] to [F.A.] Lindemann  W.L. BRAGG/65A/41  6 Nov. 1929

Contents:
¼ page, typescript
Hopes Lindemann will be able to come on 9th.

F.Stratton to [W.L.] Bragg  W.L. BRAGG/65A/42  6 Nov. 1929

Contents:
Cambridge 1¼ pages, MS
Regrets he will not be able to come to meeting. Should his engagement be cancelled, he will come along. Ratcliffe can tell them about the position at Cambridge. Ratcliffe is getting a good survey company together. Will say a few words at the dinner.

J.A.Ratcliffe to [W.L.] Bragg  W.L. BRAGG/65A/43  [?]Nov. 1929

Contents:
Cambridge ½ page, MS
Will try to get to the meeting [of Field Survey Association].

[W.L. BRAGG] to [M.N.] McLeod  W.L. BRAGG/65A/44  7 Nov. 1929

Contents:
½ page, typescript
Lindemann will try to come to [Field Survey Association dinner] but thinks it is doubtful. Stratton is coming and will speak. Comments on the careers of Stratton and Lindemann.

G.T.McCaw to [W.L.] Bragg  W.L. BRAGG/65A/45  8 Nov. [1929]

Contents:
War Office 1 page, MS
Has sent guest cards to Stratton and Lindemann. Ratcliffe will be Bragg's own guest; is enclosing another card.

Field Survey Association  W.L. BRAGG/65A/46  November 1929

Contents:
3 pages, duplicated
Minutes of the Annual Meeting held at the War Office on 9th November 1929.

[Field Survey Association]  W.L. BRAGG/65A/47  November 1929

Contents:
3 pages, duplicated
Report on the Annual Dinner of the Association, [9th November 1929].

Harold Hemming to [W.L.] Bragg  W.L. BRAGG/65A/48  12 Nov. 1929

Contents:
London 1¼ pages, typescript
Is enclosing clipping about Etienne S.Bieler's memorial service. Is more or less pleased with Saturday's results. Asks Alice Bragg to let him know if she wants to, buy sister's wine cooler; comments on this.

G.T.McCaw to [W.L. BRAGG  W.L. BRAGG/65A/49  13 Nov. 1929

Contents:
War Office ½ page, MS
Is enclosing drafts of prospectus for Bragg to look at.
With cover note from [M.N.McLeod], 13 Nov. 1929, for his draft prospectus; 2/3 page, MS; W.L. BRAGG/65A/50.

[Lawrence Bragg] to [G.T.] McCaw  W.L. BRAGG/65A/51  14 Nov. 1929

Contents:
¼ page, typescript
Is enclosing money for Ratcliffe's ticket. Enjoyed the function. Sorry McCaw will no longer be Secretary [of Field Survey Association]. Is enclosing letter from [J.A.] Ratcliffe.

[W.L. BRAGG] to [Harold] Hemming  W.L. BRAGG/65A/52  14 Nov. 1929

Contents:
¼ page, typescript
Acknowledges letter. His wife does not want wine cooler. Enjoyed lunch party. Asks Hemming to return book. Is going to give lecture on sound ranging [at Manchester]; hopes to raise interest in the O.T.C.

[W.L. BRAGG] to [R.S.S.] Mitchell  W.L. BRAGG/65A/53  14 Nov. 1929

Contents:
¼ page, typescript
Thanks Mitchell for note about [A.J.] Philpot. Cannot understand why Philpot did not near about [Field Survey Association] dinner. Will write to Philpot.

[W.L. BRAGG] to [G.T.] McCaw  W.L. BRAGG/65A/54  16 Nov. 1929

Contents:
½ page, typescript
Likes both drafts [of Field Survey Association prospectus]. Discusses the drafts.
With prospectus: 2¼ pages, duplicated; W.L. BRAGG/65A/55.

T.M.Harbottle to W.L. BRAGG  W.L. BRAGG/65A/56  16 Jan. 1930

Contents:
Newcastle on Tyne 2/3 page, typescript
Is trying to get Durham University to take over one of Macleod's sound ranging sets. Professor of Physics, Curtis, seems sympathetic. Has difficulty in explaining to Curtis how to use set. Asks Bragg for help.

[W.L. BRAGG] to [T.M.] Harbottle  W.L. BRAGG/65A/57  17 Jan. 1930

Contents:
1/3 page, typescript
Sound ranging set invaluable for laboratory work which requires accurate timing. Set would not routinely be in use in laboratory. Useful if a group of students were to try sound ranging experiments, perhaps under Harbottle's guidance.

Field Survey Association (A.H.Pullan, Hon.Sec.) to members  W.L. BRAGG/65A/58  [Jan. 1930]

Contents:
War Office 2/3 page, duplicated
Is enclosing copy of prospectus. Comments on advantages of membership of the Association.
With Prospectus approved by Council at meeting on 13 Jan. 1930; 1 page, duplicated; W.L. BRAGG/65A/59.

[W.L. BRAGG] to George [P. Thomson]  W.L. BRAGG/65A/60  10 Oct. 1930

Contents:
¼ page, typescript
Is giving talk to [Thomson's] people on 3 November. Invites him to Field Survey Dinner on 1st November.

[W.L. BRAGG] to [A.H.] Pullan  W.L. BRAGG/65A/61  15 Oct. 1930

Contents:
1/3 page, typescript
Wishes to bring G.P.Thomson as his guest to Field Survey Association [dinner]. Asks for ticket.

[W.L. BRAGG] to George [P.Thomson]  W.L. BRAGG/65A/62  15 Oct. 1930

Contents:
1/3 page, typescript
Pleased he can come to Sound Ranging dinner. Gives details. Thanks [Thomson] for invitation to dine after his lecture.

Field Survey Association (A.H.Pullan) to W.L. BRAGG  W.L. BRAGG/65A/63  16 Oct. 1930

Contents:
War Office ¼ page, typescript
Tickets for Bragg and his guest will be forwarded. Dinner is at 7.30 and A.G.M. will be at 3 p.m.

C.M.Mason to [W.L.] Bragg  W.L. BRAGG/65A/64  5 Dec. 1930

Contents:
Manchester University O.T.C. ¼ page, typescript
Is enclosing memorandum about War Office's planned reorganisation of the O.T.C.; comments on this. Invites Bragg to meeting to discuss proposals.
With memorandum, 8 Nov. 1930; 4 pages, duplicated; 65A/65.

[W.L. BRAGG] to [C.M.] Mason  W.L. BRAGG/65A/66  24 Dec. 1930

Contents:
¼ page, typescript
Is enclosing copy of letter he has just received. Will write again about this.
With letter, 22 Dec.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/67  22 Dec. 1930

Contents:
War Office 11/3 pages, typescript
Surplus sound-ranging sets have been issued to Universities where they are being used in investigation of travel of sound waves over long distances. Six more sets available; plans to send them to Manchester, Glasgow and Durham universities. Asks if Bragg could find someone at Manchester to look after the set. Discusses use of sets by Universities. Comments on formation of O.T.C. survey, sound-ranging and flash-spotting units. Comments on interest of the R.A. in reserves for survey units.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/68  24 Dec. 1930

Contents:
1/3 page, typescript
Was very interested in MacLeod's letter. Recently attended meeting of O.T.C. [at Manchester] at which possibility of setting up a sound ranging section was discussed; comments on this. Is sure some scientific people would join if they had prospect of doing interesting work. Thinks Manchester should have sound ranging set.

Field Survey Association (A.H.Pullan) to members  W.L. BRAGG/65A/69  29 Jan. 1931

Contents:
War Office 2/3 page, duplicated
Members of the Association may attend School of Artillery demonstration at Larkhill on 14 and 15 April. Comments on this.

[W.L. BRAGG] to [C.W.] Mason  W.L. BRAGG/65A/70  31 March 1931

Contents:
¼ page, typescript
Is enclosing note from a friend who runs sound ranging section at London University. Would like to see a section started [in Manchester].

[W.L. BRAGG] to [A.H.] Pullan  W.L. BRAGG/65A/71  17 April 1931

Contents:
¼ page, typescript
Sorry he could not get to demonstration at Larkhill; comments on this.

Field Survey Association (J.G.Gibson, Hon.Sec.) to members  W.L. BRAGG/65A/72  20 Feb. 1932

Contents:
War Office ¾ page, duplicated
Is enclosing minutes of A.G.M. held on 24 October. Comments on change of date of Annual Dinner. Is enclosing notice of visit to School of Artillery and invitation to Inspect Ordnance Survey Office, Southampton; comments on latter.
With details of proposed visit to School of Artillery: 1 page, duplicated; W.L. BRAGG/65A/73.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/74  25 April 1932

Contents:
War Office ½ page, typescript
Has been suggested that attempt should be made to revive interest of members of the Field Survey Association in technical matters by short lecture after A.G.M. Thought it would be more useful to discuss definite proposals and has written enclosed memorandum. Would welcome comments. Plans to invite written comments, circulate these and discuss them at Meeting, trying to arrive at best solution to problem under discussion.
With memo: notes on sound ranging: 1¼ pages, typescript; W.L. BRAGG/65A/75. About the adaptation of sound ranging to mobile warfare.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/76  28 April 1932

Contents:
¾ page, typescript
Interested in plan to have discussion after A.G.M. and in subject suggested. Comments on way in which apparatus might be adapted so as to register long period gun wave. MacLeod's suggestion would solve the short base problem. Invites MacLeod to lunch with him on 19th May.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/77  [?] May 1932

Contents:
War Office 1½ pages, typescript
Atkins has written to say he has an idea about which he will consult Bragg. Is enclosing some notes from Hodgkinson. Hodgkinson has been working on a short base sound ranging system and claims that considerable advances in technique have been made. He is not convinced. At meeting of R.E. Board asked whether it would be advisable to invite Bragg and other sound ranging O.C.s to look through and comment on Hodgkinson's reports. Comments on reaction to this proposal and on his decision to drop the matter for the time being. Will be delighted to lunch with Bragg on 19th. Comments on recent luncheon engagement he missed because of his absent-mindedness.
With notes [Hodgkinson] on an instrument for approximate location of guns for the use of Flash Spotting Officers: 1 page, typescript; W.L. BRAGG/65A/78.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/79  9 May 1932

Contents:
¼ page, typescript
Will see MacLeod on 19th. Would be pleased to act as a consultant, especially if it is with Atkins.

[W.L. BRAGG] to [A.H.] Atkins  W.L. BRAGG/65A/80  12 May 1932

Contents:
¼ page, typescript
Invites Atkins to lunch with him and MacLeod on 19th. Wants to discuss plans. Thinks Hodgkinson is probably going about the matter in the most complicated way.

[W.L. BRAGG]  W.L. BRAGG/65A/81  [ca. May 1932]

Contents:
1½ pages, MS
Notes for sound ranging meeting.

Field Survey Association  W.L. BRAGG/65A/82  [May 1932]

Contents:
3 pages, duplicated
Agenda for A.G.M. to be held on 18th June 1932. With list of new members and War Office Memorandum "Sound ranging in mobile warfare", 25 May [copy of W.L. BRAGG/65A/75].

Field Survey Association (J.G.Gibson) to members  W.L. BRAGG/65A/83  25 May 1932

Contents:
War Office 1½ pages, duplicated
Notice about A.G.M. and Dinner, with notes on discussion meeting and agenda.
With enclosures
a) Sound ranging in mobile warfare: War Office, 25 May; 1 page, duplicated: W.L. BRAGG/65A/84.
b) Report on visit to School of Artillery, Larkhill, 12-14 April: War Office, 21 May 1932; W.L. BRAGG/65A/85.

Field Survey Association (J.G.Gibson) to members  W.L. BRAGG/65A/86  [ca. June 1932]

Contents:
War Office
Enclosing papers for A.G.M. Comments on decision to continue existing subscription arrangements. Notes plan to hold informal lunch.
With enclosures
a) Minutes of A.G.M., 18 June 1932; 5¼ pages, duplicated; W.L. BRAGG/65A/87.
b) Report of discussion on sound ranging in mobile warfare, 18 June 1932; 1¼ pages, duplicated; W.L. BRAGG/65A/88.
c) Report on annual dinner, [18] June 1932; 2¼ pages, duplicated; W.L. BRAGG/65A/89

Field Survey Association (A.H.Pullan) to [W.L.] Bragg  W.L. BRAGG/65A/90  20 Oct. 1932

Contents:
War Office ¾ page, duplicated & typescript
Comments on plan to hold luncheon on 23 November as there will be no Annual Dinner. Hopes Bragg will attend.

[W.L. BRAGG] to [A.H.] Pullan  W.L. BRAGG/65A/91  25 Oct. 1932

Contents:
¼ page, typescript
Regrets he will not be able to attend luncheon on 23rd November. Hopes it will be successful.

Field Survey Association  W.L. BRAGG/65A/92  2 March 1933

Contents:
War Office ½ page, duplicated
Gives details of visits arranged.

Hutchinson & Co (Publishers) Ltd (C.F.Tweney) to W.L. BRAGG  W.L. BRAGG/65A/93  25 Sept. 1933

Contents:
London ½ page, typescript
Asks Bragg to contribute articles on crystal structure and on sound ranging to a technological and scientific dictionary. Also needs article on radio activity. Comments on the articles.
With instructions for contributors: 2 pages, duplicated; W.L. BRAGG/65A/94.

[W.L. BRAGG] to C.F.Tweney, Hutchinson & Co. Ltd  W.L. BRAGG/65A/95  3 Oct. 1933

Contents:
½ page, typescript
Could write article on crystal structure. Asks what Tweney wants article on sound ranging to cover. Could find colleague to write article on radioactivity. Asks if the fee is £10 per article.

Hutchinson & Co. (Publishers) Ltd to W.L. BRAGG  W.L. BRAGG/65A/96  4 Oct. 1933

Contents:
London 1/3 page, typescript
Acknowledges letter. Comments on the articles required and on the fee.

A.H.Atkins to W.L. BRAGG  W.L. BRAGG/65A/97  3 Oct. 1933

Contents:
Liverpool ¼ page, typescript
Proud is anxious that Bragg should attend Dinner of the Field Survey Association on 8th November. He plans to go. Thinks the Association needs support.

[W.L. BRAGG] to [C.F.Tweney, Hutchinson & Co. Ltd]  W.L. BRAGG/65A/98  6 Oct. 1933

Contents:
1/3 page, typescript
Asks if Mr Nuttall may write the article on radioactivity and Mr James those on crystal structure and sound ranging; comments on this. Has written to Colonel MacLeod for permission for note on sound ranging.

[W.L. BRAGG] to [A.H.] Atkins  W.L. BRAGG/65A/99  6 Oct. 1933

Contents:
¼ page, typescript
Hopes to be able to attend [Field Survey Association dinner] on 18th November.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/100  16 Oct. 1933

Contents:
¼ page, typescript
James has been asked to write article on sound ranging for Hutchinson's Technical Dictionary. Asks if the War Office has any objection to this.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/101  18 Oct. 1933

Contents:
War Office ½ page, typescript
Does not participate any War Office objection to article on sound ranging but it would be best if James were to send article to them for vetting. Imagines article will be concerned mainly with the war and the physical facts associated with sound ranging. Hopes to see Bragg at Field Survey Association dinner. Comments on this.

Hutchinson & Co. (Publishers) Ltd (C.F.Tweney) to W.L. BRAGG  W.L. BRAGG/65A/102  8 Oct. 1933

Contents:
London ¼ page, typescript
Thanks Bragg for arranging contributions on radioactivity, sound ranging and crystal structure.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/103  10 Oct. 1933

Contents:
¼ page, typescript
Acknowledges letter. Will send article to MacLeod. Hopes to come to dinner on 18th.

[R.W.James]  W.L. BRAGG/65A/104  [ca. October 1933]

Contents:
11½ pages, typescript
How sound ranging was done in theory and practice.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/105  30 Oct. 1933

Contents:
War Office 1 page, MS
Asks if Bragg will propose the health of the guests at the Field Survey Association's dinner on 18th November.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/106  31 Oct. 1933

Contents:
¼ page, typescript
Agrees to propose toast at Field Survey Association dinner. Asks for more information about the guests.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/107  2 Nov. 1933

Contents:
War Office 1¾ pages, MS
Pleased Bragg will propose toast of the guests. Imagines Bragg knows more about Dr Simpson than he does. Gives details of the career of Brig-Gen. Sir James Edmonds.

A.H.Pullan to [W.L.] Bragg  W.L. BRAGG/65A/108  6 Nov. 1933

Contents:
Institution of Electrical Engineers, London
1½ pages, MS
Understands Bragg will not be able to attend the Field Survey Association dinner after all. He and MacLeod wondered if Bragg had mistaken the date. Dinner is on 18th; gives details. Had hoped Bragg would propose toast of the guests.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/109  7 Nov. 1933

Contents:
¼ page, typescript
Cannot come to dinner. A long time ago accepted invitation to function in Manchester and his wife invited friends to dine first. Had thought of cutting the function but cannot cancel the other engagement.

[W.L. BRAGG] to [A.H.] Pullan  W.L. BRAGG/65A/110  7 Nov. 1933

Contents:
1/3 page, typescript
Regrets he cannot come to dinner. Sent a telegram to MacLeod hoping it would be in time to prevent mistake in programme. Discovered he had other engagements; comments on this.

[W.L. BRAGG] to [A.H.] Atkins  W.L. BRAGG/65A/111  [?]Nov. 1933

Contents:
2/3 page, typescript
Regrets he cannot go to the Field Survey dinner. Have put their boys down for Rugby; comments on the science teaching at Rugby. Hopes to see Carrie before he, Bragg, goes to America.

John R. Innes to [W.L.] Bragg  W.L. BRAGG/65A/112  Nov. 1933

Contents:
Exmouth 2 pages, typescript
At last Survey dinner, spoke to Bragg about plan to publish story of the Groups and elections. Has prepared typescript about the flash spotters for the Committee; discusses this. Discusses widening scope of the book to deal with the sound rangers. asks if Bragg would read the typescript of the book as it stands; comments on this.

[W.L. BRAGG] to [A.H.] Innes  W.L. BRAGG/65A/113  14 Nov. 1933

Contents:
¾ page, typescript
Will try to write chapter on technique. Suggests Innes ask [A.H.] Atkins to write chapter on the [Sound ranging] section under battle conditions. Will wait until Innes sends typescript.

John R. Innes to [W.L.] Bragg  W.L. BRAGG/65A/114  1/31 Nov. 1933

Contents:
Exmouth 2 pages, typescript
Thanks Bragg for undertaking to write on technique of sound ranging. Is enclosing typescript; comments on this. Comments on diagrams. Propose having appendix of technical details; discusses this. Is writing to see if [A.H.] Atkins can help. Some of the men are very keen to have a history of the surveys. Regrets he will not be able to attend dinner.

Thomas A.Spiers to W.L. BRAGG  W.L. BRAGG/65A/115  21 Nov. 1933

Contents:
Leicester 1/3 page, typescript
Invites Bragg to a [Field Survey Association] dinner in Leicester on 8th December.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/116  30 Nov. 1933

Contents:
Exmouth 1¾ pages, typescript
Should like chapter on the technique and instruments of sound ranging; discusses this. Outlines his own ideas for the chapter. Comments on illustrations. Has written to [A.H.] Atkins but has had no reply.

[John R,Innes] to [W.L.] Bragg  W.L. BRAGG/65A/117  7 Dec. 1933

Contents:
Exmouth ¾ page, typescript
Met Hodgkinson and Rodwell of R Section; Rothwell will write about their experiences in 1918. Is enclosing draft of contents; comments on this.

[W.L. BRAGG] to [M.N.] MacLeod  W.L. BRAGG/65A/118  8 Dec. 1933

Contents:
1/3 page, typescript
Wants to adopt one of principles used in sound ranging apparatus for some other apparatus. Comments on this and asks if they might borrow a sound ranging set or if the man making their apparatus might come and inspect a sound ranging set in London. Was sorry he could not come to the dinner.

A.H.Atkins to W.L. BRAGG  W.L. BRAGG/65A/119  27 Dec. 1933

Contents:
Liverpool ¼ page, typescript
Is sending two publications from the Sperry Gyroscope Company as Rawlings, the Chief Engineer, has applied to join the [Field Survey] Association. Carrie will be there between March and June. Imagines Bragg will be back from U.S.A. before then.

[W.L. BRAGG] to [-?-] Ellis [?J.R.Innes]  W.L. BRAGG/65A/120  9 Jan. 1934

Contents:
1/3 page, typescript
Has written note about sound ranging. Asks Ellis to modify it as he wishes. Comments on figures. Is off to America on 27th January. Asks him to return pamphlet. Is sending back manuscript.

A.H.Atkins to W.L. BRAGG  W.L. BRAGG/65A/121  12 Jan. 1934

Contents:
Liverpool 1/3 page, typescript
Understands Bragg sails for America on 27th. Carrie wants to get in touch with Bragg when Bragg gets to U.S.A. Investigations have been carried out by the Canadian National Research Council at Ottawa and the laboratory has been subsidised by Canadian Refractories. Would like to send Bragg's programme to Carrie.

[W.L. BRAGG] to [A.H.] Atkins  W.L. BRAGG/65A/122  12 Jan. 1934

Contents:
1/3 page, typescript
Thanks Atkins for publications. Pleased Rawlings wants to join [Field Survey Assoc.]. Sails for New York on 27th January and will spend four months at Cornell University. Returns at beginning of June. Will be at Cornell for whole time except for one or two visits; one will be to Kingston and Montreal in March.

A.H.Atkins to W.L. BRAGG  W.L. BRAGG/65A/123  13 Jan. 1934

Contents:
Liverpool ¾ page, typescript
Carrie plans to visit Britain in March. Carrie should be back in Montreal before June. asks how long Bragg plans to be in Montreal and when he plans to be there. Canadian Refractories are making a number of refractory cements; comments on this. The Consett Iron Company are successfully making basic bricks from the Canadian material.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/124  14 Jan. 1934

Contents:
Exmouth 1 page, typescript
Thanks Bragg for script. Thinks it is an adequate account of the technique of sound ranging for their purposes. Will revise it a little to bring it in line with the rest of the book; comments on this. MacLeod has provided notes for an introductory chapter. Asks if he should keep copy of the Survey Manual until Bragg's return.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/125  16 Jan. 1934

Contents:
1/3 page, typescript
Innes may use his material in any way he wishes. If the account is for the general public, he has assumed too much knowledge on the part of the reader. Innes must use his own judgement. Rothwell will do excellent job of the rest. Innes may keep Survey Manual until his return if he wishes.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/126  17 Jan. 1934

Contents:
2/3 page, typescript
Very grateful to Bragg for writing chapter. Does not think the book will be unsuitable for the general reader; discusses this. Hopes Bragg will have successful trip to America. Will keep Survey Manual until his return.

[?].Rothwell to [W.L.] Bragg  W.L. BRAGG/65A/127  20 Jan. 1934

Contents:
Westerham 3½ pages, MS
Read Bragg's contribution to book on the Survey Companies. He is contributing to book. discusses Bragg's criticism of the "short base". Comments on distortions in the sound wave and on the wind sections. Asks if Bragg's criticisms refer only to the conditions under which they worked in the war. Knows something of Hodgkinson's work once the war but his comments do not necessarily represent Hodgkinson's views fairly or completely. Hopes Bragg enjoys trip to America.

[R.W.James] to M.[N.] MacLeod  W.L. BRAGG/65A/128  [?] Feb. 1934

Contents:
½ page, typescript
Is enclosing article on sound ranging which he has written for Hutchinson's Encyclopaedia. Bragg told him MacLeod had agreed to look through it. Comments on the article.

Field Survey Association  W.L. BRAGG/65A/129  [1934]

Contents:
1 page, duplicated
Notice of the Annual General Meeting and dinner to be held on 7th December.

[W.L. BRAGG] to C.E.Carrington, Cambridge University Press  W.L. BRAGG/65A/130  9 Nov. 1934

Contents:
¾ page, typescript
Has no objection to reproduction of figure showing firing of the Howitzer; comments on this.

[W.L. BRAGG] to [A.H.] Pullan  W.L. BRAGG/65A/131  12 Nov. 1934

Contents:
¼ page, typescript
Regrets he cannot come to the Sound Ranging Dinner. Is too busy with the Christmas Lectures in London.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/132  16 Dec. 1934

Contents:
Exmouth 1¼ pages, typescript
Allen & Unwin are willing to publish "Flash spotters and sound rangers". Comments of the illustrations to Bragg's chapter. Prepared chapter on growth of sound ranging from the official report; comments on this. Would like to add Bragg's name to his Chapter; comments on this. Publishers want completed MS to prepare a printing estimate. Is returning text book.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/133  [?] Jan. 193[5]

Contents:
Exmouth 1/3 page, typescript
Is enclosing prints of films he plans to use to illustrate Bragg's chapter on sound ranging. Comments on the films.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/134  17 Jan. 1935

Contents:
½ page, typescript
Acknowledges letter, which he has just received. Account is all right and would be pleased if Innes wishes to put his, Bragg's, name to it. Assumes Innes has got permission to publish the material from the War Office; comments on this. Thinks the two films are splendid examples. Will be interested to see the book when it comes out.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/135  13 Jan. 1935

Contents:
Exmouth 1¼ pages, MS
Can work in three films to a page. Is sending another for Bragg's approval; comments on the films. Hopes the book will prove readable to all old flash spotters and sound rangers. Thanks Bragg for his help.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/136  15 Jan. 1935

Contents:
1/3 page, typescript
Film Innes sent illustrated the shell wave report and burst excellently but the film has been reversed; discusses this.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/137  19 Jan. 1935

Contents:
¼ page, typescript
Title Innes suggests covers the case. Amends the final sentence. Thinks he would untitle it "Sound Ranging Records".

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/138  [?] Feb. 1935

Contents:
Exmouth 1½ pages, typescript
Discusses problems they had with film. Does not think a line drawing would be as interesting to the general reader. Discusses way in which films might be titled and problems in positioning illustrations in the book. Is enclosing copy of a circular letter which has been sent to a limited number of people; comments on this. Apologises for making so many demands on Bragg's time. Doubts if there will be another source from which the general public will be able to learn something of what was a remarkable achievement.
With enclosures
a) Captions for films: ¾ page, typescript & MS; W.L. BRAGG/65A/139
b) Circular letter, 16 Jan. 1935; ¾ page, printed; W.L. BRAGG/65A/140: about the book "Flash Spotters and Sound Rangers" and proposed Endowment Fund to finance publication.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/141  Feb. 1935

Contents:
1/3 page, typescript
Does not think way the margin disappears matters. Is in favour of printing the actual film rather than a line drawing. Description seems all right. Asks for proof of the transparency to check. Is keeping diagram to have slide made.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/142  25 March 1935

Contents:
½ page, typescript
Asks if Bragg wants to check proofs of his chapter or if he, Innes, should check them against MS. Will send proofs of matter relative to the illustrations. Is enclosing extra prints of the films. Asks if Bragg would like to have negative of the film to use to make slide.

[W.L. BRAGG] to [J.R.] Innes  W.L. BRAGG/65A/143  26 March 1935

Contents:
¼ page, typescript
All right for Innes to check proofs against the MS. Pleased to have the proofs too. Negative would be helpful for making slides.

John R.Innes to [W.L.] Bragg  W.L. BRAGG/65A/144  3 March 1935

Contents:
Exmouth ½ page, typescript
Discusses alteration he has made to the proofs. Is sending the proofs.

[?].T.McCaw to W.L. BRAGG  W.L. BRAGG/65A/145  9 Jan. 1936

Contents:
War Office 1¼ pages, MS
Asks if Bragg would write a review of "Flash Spotters and Sound Rangers" for the Empire Survey Review; comments on this.

[W.L. BRAGG] to [G.T.] McCaw  W.L. BRAGG/65A/146  Feb. 1936

Contents:
¼ page, typescript
Is very busy but could get James or Nuttall to write review.

[W.L. BRAGG] to [G.T.] McCaw  W.L. BRAGG/65A/147  March 1936

Contents:
¼ page, typescript
Is enclosing review by Nuttall of "Flash Spotters and Sound Rangers"; comments on this. Wishes he could have done it himself but as he was partly responsible for writing it, better someone else should do it.

Field Survey Association (A.D.Simms) to members  W.L. BRAGG/65A/148  Feb. 1936

Contents:
War Office ¾ page, duplicated
Notes forthcoming visits and luncheon. Comments on annual dinner. Reminds members that subscriptions are due.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/149  [?] Dec. 1936

Contents:
Chilworth 3½ pages, MS
Is sending his paper "A new deal in tactics"; comments on the paper and on further papers he hopes to publish. Refers to his belief that credit really due to the Artillery Survey has gone to the Tank Corps.

M.N.MacLeod to [W.L.] Bragg  W.L. BRAGG/65A/150  March 1937

Contents:
Southampton 1¼ pages, MS
Thanks Bragg for returning papers. Pleased he found them interesting. Comments on tank warfare. Agrees with Bragg that prime necessity is to be able to face new problems and situations with an open mind. Important to be right about connection between cause and effect in the past. Hopes to hammer away at the subject a little longer before vested interests become so strong that only a war can overcome them.

Field Survey Association (A.D.Simms) to members  W.L. BRAGG/65A/151  July 1937

Contents:
War Office 2/3 page, duplicated
Gives details of arrangements for visits to the Royal Air Force School of Photography and the Royal Aircraft Establishment on 29th July.

Field Survey Association (A.D.Simms) to members  W.L. BRAGG/65A/152  March 1938

Contents:
1½ pages, duplicated
Costs and comments on Association visits arranged during 1938.
With form for booking visits: ¾ page, duplicated; W.L. BRAGG/65A/153.

[W.L. BRAGG] to [A.D.] Simms, Secretary, Field Survey Association  W.L. BRAGG/65A/154  Oct. 1938

Contents:
½ page, typescript
Is to take chair at meeting of the Association of Scientific Workers on 2nd November at which they will discuss employment and organisation of scientists for national defence. The thing people could do is join the Field Survey Association. Asks if Simms would like to come and say something about the Association; comments on this.

Field Survey Association (J.Calder Wood) to W.L. BRAGG  W.L. BRAGG/65A/155  8 Oct. 1938

Contents:
War Office ¾ page, typescript
Simms is ill and he is dealing with Association correspondence. Council thanks Bragg for his suggestion that activities of the Association should be brought to the notice of the Association of Scientific Workers but feel that it would be inadvisable to encourage more people to join the Association unless they have definite experience and training in surveying and mapping work; comments on this. Crisis produced large influx of qualified new members. Only a small proportion of F.S.A. members is likely to be employed on survey work in the event of mobilization; comments on this.

[W.L. BRAGG] to J.Calder-Wood, Field Survey Association  W.L. BRAGG/65A/156  Feb. 1939

Contents:
¼ page, typescript
Gives his address and present post.

[W.L. BRAGG] to K.D.Murray  W.L. BRAGG/65A/157  May 1939

Contents:
½ page, typescript
Refers to Murray's suggestion that one of the Cavendish Laboratory research students might be able to assist the Sound Ranging Section. J.V.Dunworth would be pleased to act as unofficial adviser to the Section; comments on Dunworth. He, Bragg, will be interested in watching the progress of the trials.

[?]D.Murray to W.L. BRAGG  W.L. BRAGG/65A/158  May 1939

Contents:
Cambridge University O.T.C. 1/3 page, typescript
Acknowledges letter which he has sent to Dykes asking him to arrange meeting.

[?]D.Murray to W.L. BRAGG  W.L. BRAGG/65A/159  May 1939

Contents:
Cambridge University O.T.C 1/3 page, typescript
[?]nworth visited the ranges. Asks if Bragg would like further meeting on Sunday to discuss generally the lines on which they should work.

Field Survey Association: correspondence, minutes, reports  W.L. BRAGG/65B  June 1939 - May 1946

[W.L. BRAGG] to H.J.Gough, War Office  W.L. BRAGG/65B/1  June 1939

Contents:
[Cambridge] 1¼ pages, typescript
Sound Ranging Section at Cambridge has been issued with a set of the new apparatus. Was present at practice shoot ranging on gun cotton explosions. Comments on the difficulties experienced. Section has not been given instruction book nor has an expert time to show how apparatus should be used. Section has a week of exercises starting on 14 June. Asks if [T.G.] Hodgkinson could visit Cambridge beforehand to give some advice on the use of the apparatus; comments on this.

[H.J.] Gough to [Lawrence] Bragg  W.L. BRAGG/65B/2  Postmark 6 June 1939

Contents:
War Office ½ page, typescript; telegram
[T.G.] Hodgkinson can visit Cambridge on 9th June.

[W.L. BRAGG] to [T.G.] Hodgkinson  W.L. BRAGG/65B/3  June 1939

Contents:
[Cambridge] ½ page, typescript
Delighted Hodgkinson will visit on 9th June. Sound rangers have trouble with the new apparatus and advice of Hodgkinson would be invaluable. Gives times ot trains to Cambridge. Do not have the right microphone grids for the new apparatus. Asks if Hodgkinson could bring the necessary apparatus with him.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/4  June 1939

Contents:
War Office 2/3 page, typescript
Has made arrangements for [T.G.] Hodgkinson and an assistant to visit Cambridge. asks Bragg to make detailed arrangements with the Superintendent of the Air Defence experimental Establishment, Biggin Hill. Sorry the new equipment was unsatisfactory. had useful talk with [J.] Cockcroft.

T.G.Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/5  2 June 1939

Contents:
Air Defence Experimental Establishment, Biggin Hill
¾ page, typescript
Asks Bragg to thank members of the O.T.C. for their hospitality. Comments on faults of [sound ranging] apparatus. The No.1 set is a good experimental set. The time keeping and photography are very good; comments on this. Will do what he can to expedite delivery of the stores required. They are not the O.T.C.'s official "parents" but perhaps they will permit us to be Godparents". Will get in touch with the Survey battery, "the official parents". If the O.T.C. gets new screens, it should be able to do good work at the camp.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/6  Aug. 1939

Contents:
Ministry of Supply, London ½ page, typescript
Acknowledges letter of 30th August. Bragg's proposal about sound ranging is excellent and welcome. Must not neglect any opportunity of obtaining the best scientific advice on the technical problem. Asks Bragg to act on the proposal and send him a confidential report as soon as possible.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/7  Sept. 1939

Contents:
[Cambridge] ½ page, typescript
Has seen what has been done about the sound ranging apparatus in recent years and is not happy about the was it has developed. [T.G.] Hodgkinson has been in charge of it. Does not think Hodgkinson's ideas are sound. Experiments with one of the new sets has confirmed his impression that "it has become extremely gadgetty and complicated". [H.J.] Gough, Director of Research to the Army, has agreed to proposal that a few people had experience in the last war, should report on the present state of sound ranging. Asks if Atkins would do this. Had thought of writing to [A.J.] Philpot too; comments on it.

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/65B/8  pt. 1939

Contents:
[Cambridge] 1/3 page, typescript
Unhappy about lines along which sound ranging has been developed by [T.G.] Hodgkinson. Apparatus has become very complicated and "gadgetty" and some of the important lessons learnt in the last war have been forgotten. Suggested to [H.J.] Gough [?] he, Philpot and [A.H.] Atkins might report on recent developments. Asks if Philpot could do this.

P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/9  Sept. 1939

Contents:
Royal Engineer & Signals Board, London
Page, typescript
Greatly appreciated Bragg's offer to comment on and advise on the development of G.S.R. sets. Will be pleased to have his opinion. Their primary concern is now the immediate needs ot the troops rather than longer range developments. The new G.S.R. It should be ready for full scale trials by early October; comments on this. The pattern of set which the University received is what the troops will use in the field for the present'; minor improvements might be incorporated. Asks Bragg to send his ideas rect to him.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/10  Sept. 1939

Contents:
Ministry of Supply, London 1/3 page, typescript
As discussed with Brigadier Sayer the proposed report on sound ranging by [A.H.] Atkins and [A.J.] Philpot. If Bragg will communicate directly with Sayer, Sayer will ke all necessary arrangements.

[Lawrence Bragg] to A.[P.] Sayer  W.L. BRAGG/65B/11  Sept. 1939

Contents:
[Cambridge] ¾ page, typescript
preciates the generous way in which Sayer accepted his offer. Has been uneasy ut way in which the sound ranging apparatus has developed. Comments on [A.H.] Atkins and [A.J.] Philpot, whom he has asked to inspect the present apparatus. alias that radical alterations cannot be made to set at this stage. Thinks first step to get [T.G.] Hodgkinson to explain the new set to Atkins and Philpot. Suggests the eting be held at Cambridge. Does not wish to express his criticisms to Philpot and Atkins until Hodgkinson has had his say.

J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/12  Sept 1939

Contents:
British Scientific Instrument Research Assoc.
1 page, typescript
Should be pleased to cooperate with Bragg in any type of work. If Bragg's scheme is accepted [H.J.] Gough should apply to [Edward] Appleton at the Department of Scientific & Industrial Research for his, Philpot's, services; comments on this.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/13  Sept. 1939

Contents:
[Cambridge] 1/3 page, typescript
[A.J.] Philpot has agreed to cooperate in making a report about the sound ranging set. The procedure is for Sayer or Gough to apply to [Edward] Appleton at the Department Scientific & Industrial Research for Philpot's services. Asks if he may tell [A.H.] Atkins that his expenses will be paid.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/14  Sept. 1939

Contents:
Liverpool 1/3 page, typescript
u be pleased to help Bragg. Always had the impression that [T.G.] Hodgkinson had very complicated mind and can believe his apparatus would tend to be "gadgetty".

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/15  Sept. 1939

Contents:
[Cambridge] ¼ page, typescript
Acknowledges letter. Is arranging preliminary meeting at Cambridge where [T.G.] Hodgkinson will explain the [sound ranging] apparatus.

P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/16  Sept. 1939

Contents:
Royal Engineers & Signals Board, London
page, typescript
Atkins Bragg's suggestion that [T.G.] Hodgkinson should explain the [sound ranging] : to Philpot and Atkins is excellent. Will arrange this. The set at Cambridge is the .1 Mark 1 with which the troops are equipped. The new set, No.1 Mk II, is shortly to Allergo trials and embodies many improvements.

EX to [Lawrence] Bragg  W.L. BRAGG/65B/17  1/311 Sept 1939

Contents:
Bigginhill ½ page, telegram
Atkins if [T.G.] Hodgkinson could come to Cambridge on 18th. He could stay overnight if necessary.

A. Fordham to [Lawrence] Bragg  W.L. BRAGG/65B/18  Sept. 1939

Contents:
Royal Engineer Signals Board, London 1/3 page, typescript
e usual travel expenses will be paid to [A.H.] Atkins and [A.J.] Philpot. [T.G.] Hodgkinson has been asked to contact Bragg to confirm arrangements for meeting at Cambridge. Hodgkinson can arrange for Philpot and Atkins to visit Shoeburyness as soon as possible after the Cambridge meeting.

[A.H.] Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/19  Postmark 13 Sept. 1939

Contents:
Liverpool ¼ page, telegram
l arrive in Cambridge on Monday morning.

[A.J.] Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/20  Postmark 13 Sept. 1939

Contents:
London ¼ page, telegram
Afternoon of Monday 18th is quite convenient.

H.G. Costelloe to [Lawrence] Bragg  W.L. BRAGG/65B/21  Sept. 1939

Contents:
Air Defence Experimental Establishment, Biggin Hill
page, typescript
G. Hodgkinson will be in Cambridge at about mid-day on Monday 18th. Hodgkinson . write to Bragg direct. Hodgkinson is now permanently at Foulness.

G. Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/22  Sept. 1939

Contents:
Shoeburyness 1 page, MS
come to Cambridge on Monday morning to meet Atkins, Philpot and Bragg to discuss Mark I and Mark II recorders and to fix date for Atkins and Philpot to visit eburyness.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/23  Sept. 1939

Contents:
Liverpool 1/3 page, typescript
Outlines arrangements for visit to Cambridge. Would like to be able to return to Liverpool on Tuesday night; comments on this.

[Lawrence Bragg] to H.M.Fordham  W.L. BRAGG/65B/24  Sept. 1939

Contents:
[Cambridge] 1/3 page, typescript
Confirms arrangements for [T.G.] Hodgkinson, Atkins and Philpot to visit Cambridge 18th.

[Lawrence Bragg] to [T.G.] Hodgkinson  W.L. BRAGG/65B/25  Sept. 1939

Contents:
[Cambridge] 1/3 page, typescript
Confirms arrangements for meeting in Cambridge on 18th. Is arranging for the apparatus the Rifle Range to be available in the afternoon for Hodgkinson's demonstration to Philpot and Atkins.

al Engineers Bragg to [Lawrence] Bragg  W.L. BRAGG/65B/26  16 Sept. 1939

Contents:
London ¼ page, telegram
Confirms that [T.G.] Hodgkinson will be in Cambridge on 18th.

Fordham to [Lawrence] Bragg  W.L. BRAGG/65B/27  Sept. 1939

Contents:
Royal Engineer & Signals Board, London
page typescript
Acknowledges letter of 16th. Has wired confirming that Hodgkinson will be in on 18th. Hodgkinson should arrive in plenty of time for the demonstration.

[Lawrence Bragg] to [E.T.] Paris, War Office  W.L. BRAGG/65B/28  Sept. 1939

Contents:
[Cambridge] 2/3 page, typescript
T.G. Hodgkinson gave him, [A.J.] Philpot and [A.H.] Atkins a demonstration of the earmark I sound ranging apparatus. Took a long time to make it work but eventually they made a film. They hope to visit Foulness on 29th September to see the apparatus taking s. Did not tell his criticisms to Philpot and Atkins until Hodgkinson had explained the apparatus to them. They are all reserving judgement until they go to Foulness, but Philpot's and Atkins's first impressions confirm his own doubts. Essential to earmark the good physicists for sound ranging. New apparatus very complex and it would Prequire a first-rate physicist and a first-rate mechanic with each Section if it is to tion properly. Would be pleased to help select men.

[Lawrence Bragg] to A.[P.] Sayer  W.L. BRAGG/65B/29  Sept. 1939

Contents:
[Cambridge] 1/3 page, typescript
T.G. Hodgkinson has demonstrated the Mark I [sound ranging] apparatus to him, [A.J.] Philpot and [A.H.] Atkins. Asks if they might visit Foulness where Hodgkinson could w them a set making records of the firing of guns. September 29th would be a convenient date.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/30  Sept. 1939

Contents:
Royal Engineer & Signals Board, London
page, typescript
Problems best for Bragg, Philpot and Atkins to see the Mark II set in action. Has told [T.G.] Hodgkinson to arrange for a short base layout so they can get the locations from themselves. Has told Hodgkinson to get some of the Radio Link apparatus in action. s booked 29th September.

[Lawrence Bragg] to [A.H.] Atkins  W.L. BRAGG/65B/31  Sept. 1939

Contents:
[Cambridge] ¼ page, typescript
The 29th September has been booked for the demonstration at Foulness. [T.G.] Hodgkinson is to make arrangements with them direct.
The letter to A.J.Philpot, 21 Sept. 1939; W.L. BRAGG/65B/32

T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/33  Sept. 1939

Contents:
Ministry of Supply, London ½ page, typescript
Thinks Bragg for interim report on sound ranging. Ministry of Supply is concerned v with equipment, War Office deals with personnel. Bragg might write direct to the Office about earmarking physicists for sound ranging work, or include statement in report of his current investigations, which could be sent to the War Office.

T.G. Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/34  Sept. 1939

Contents:
Southend-on-Sea 2½ pages, MS
They are looking forward to seeing Bragg, Philpot and Atkins next week. Comments on ns to Southend and Shoeburyness.

A.J. Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/35  Sept. 1939

Contents:
London ¼ page, typescript
go to Foulness on 29th September. Understands Hodgkinson is making all the arrangements.

[Lawrence Bragg] to [T.G.] Hodgkinson  W.L. BRAGG/65B/36  Sept. 1939

Contents:
[Cambridge] ¼ page, typescript
Outlines travel arrangements for visit to Southend.

[Lawrence Bragg] to A.J.Philpot.  W.L. BRAGG/65B/37  Sept. 1939

Contents:
[Cambridge] ¼ page, typescript
Outlines arrangements for visit to Southend. Suggests they spend the night in London have a preliminary attempt at their report.
Similar letter to A.H.Atkins, 25 Sept. 1939; W.L. BRAGG/65B/38.

A.H. Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/39  Sept. 1939

Contents:
Liverpool ¼ page, typescript
Acknowledges letter of 21st September. Will expect letter from [T.G.] Hodgkinson ng time to meet at Liverpool Street Station.

C.Mason to [Lawrence] Bragg  W.L. BRAGG/65B/40  Sept. 1939

Contents:
Cambridge Instrument Co. Ltd 1frac13; pages, typescript
Confirms measurements of the strings and the magnification in the sound ranging sets used the First World War and in the Mark I set. Comments on these. Greater length of ngs is due to use of transformers and increased sensitivity. Old sets were amply positive. Comments on the greater risk of strings getting tangled in new sets.

[Lawrence Bragg] to C.C.Mason  W.L. BRAGG/65B/41  Sept. 1939

Contents:
[Cambridge] 1/3 page, typescript
Would like to bring him some of the original films and some films taken with the present and ranging] apparatus. Asks if Mason would write a note comparing the old and new apparatus; comments on this.

G.Moore to [Lawrence] Bragg  W.L. BRAGG/65B/42  Sept, 1939

Contents:
Sunderland 2 pages, MS
Congratulates Bragg on taking over the Cavendish Laboratory. Recalls work he did for gg. Should there be any call for "veterans" in the national emergency, hopes to be e to respond. Has registered as an electricity supply engineer. Has no doubt Bragg play a significant part.

[Lawrence Bragg] to G.E.Moore  W.L. BRAGG/65B/43  Sept. 1939

Contents:
[Cambridge] ¼ page, typescript
Thanks Moore for letter. Has been interesting him self in the present state of sound ging. Men with experience may be needed, so will keep Moore in mind. Those who eloped sound ranging in peace time have much to gain from the experience of the I stagers".

[Lawrence] Bragg to [A.H.] Atkins  W.L. BRAGG/65B/44  2 Oct. 1939

Contents:
¼p, typescript
Is sending draft of report. Asks Atkins to amend it as he wishes. Does not want the report to reflect his own views too strongly. Has only one set of films to use as illustrations. Enjoyed their trip enormously.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/45  2 Oct. 1939

Contents:
Liverpool 2½pp, typescript
Is not happy with the sound ranging position. Is continually reminded of the early difficulties which took so long to solve in the last war. Comments on his sound ranging experiences on the Somme Front, March 1916 to May/June 1917. Did not get really good results until the damping problem was solved. On Friday they saw the sensitivity of the instrument reduced by inserting resistance in the circuit, with result that the gun-breaks on less favourably placed microphones were hardly visible; old basic principle of damping had apparently been disregarded.
Would feel happier if Bragg could assure him that a short well-damped characteristic break can be obtained. Is worried about the method of computing the battery position; discusses this. Should start again where they left off in the last war, with the old methods practised in the field to suit war conditions; then test all developments tried out at Foulness and Larkhill to see how they can be used to improve the old machine. Should not disregard the experience obtained and begin operations with a machine designed as the result of experiments carried out on practice grounds in Britain. At least one officer of scientific standing should be attached to each section. Not possible to devise a sound ranging mechanism which will give results by turning a handle.
Hates to be critical of the excellent work of Tucker and Hodgkinson.
If he had been working on similar problems in peace time, he would also have tried to achieve greater accuracy and to devise a machine which would give standard results simply. Old apparatus and methods were equally accurate, more speedy, and have been proved to work during periods of intense artillery activity. Has no experience of the apparatus devised for rapidly moving warfare. As it is probable that the war on the Western Front will be slow moving, the conditions which apply are similar to those of which they have experience.

Philips Lamps Ltd (R.A.Stephen) to [Lawrence] Bragg  W.L. BRAGG/65B/46  3 Oct. 1939

Contents:
London 2/3p, typescript
Is sending catalogue and description of components of the Philips Miller recording method for sound ranging. Thinks system has certain advantages which merit expert investigation. Equipment could be made at one of their factories. Asks Bragg to return photographs.

[Lawrence Bragg] to H.J. Gough  W.L. BRAGG/65B/47  4 Oct. 1939

Contents:
Cambridge 3pp, MS copy
He, [A.H.] Atkins and [A.J.] Philpot have inspected the Mark I and Mark II sound ranging apparatus and have written first draft of report. Did not express his criticisms to Philpot and Atkins until they had had an opportunity to form their own opinions. Became clear that they feel the same about the apparatus. The old apparatus had many faults and its improvement afforded an exciting line of research. Incredible that in twenty years so much should have been done to eliminate the best points of the old apparatus, without introducing any substantial new improvements; comments on this. Mason of the Cambridge Instrument Co. who has an order for the Mark I sets, agrees with his view. Mark II set seems much better in design and construction than the Mark I; comments on this. Many of the objections to Mark I apply to the Mark II set. If he had to take a section into the field, would rather have the old apparatus. Comments on the advantages of the old apparatus and on the possibility of modifying the Mark II design. Asks if Frank Smith as Director of Instrument Production, will have a say in the matter.
Would like to be consulted when decision about producing new apparatus is made.

A.J. Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/48  4 Oct. 1939

Contents:
London ¾p, typescript
Is in general agreement with Bragg's draft report on the new sound ranging apparatus. They do not want any delay in equipping the army with sound ranging equipment. Such delay would occur if their report gave sponsors of the new instrument an occasion for argument. Proposes to take on the role of 'Devil's Advocate'. One solid piece of evidence cannot be gainsaid: the old films Bragg produced are better than the films now being produced. Is enclosing his 'Devil's Advocacy'.
With enclosure, suggesting emendations to report; 4pp, typed; W.L. BRAGG/65B/49.

K.D. Murray to [Lawrence] Bragg  W.L. BRAGG/65B/50  4 Oct. 1939

Contents:
Cambridge University Joint Recruiting Board
¼p, typescript
Has told the O.T.C. that the old sound ranging apparatus can be sent to the Cavendish Laboratory. The Adjutant will contact Bragg when he is ready to move it. Good of Bragg to suggest training some of the lads at the laboratory.

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/65B/51  5 Oct. 1939

Contents:
[Cambridge] 11/3pp, typescript
Thinks Philpot's emendations are excellent; will incorporate them into the report. Hopes Sayer will invite them to discuss the report with him Question of building Mark II sets for sections at the Front is being considered. They could recommend proceeding with the Mark II apparatus, with a few minor alterations, or say they think it would be better for sections to be equipped with the new apparatus. Discusses these alternatives and the possibility of reaching a compromise. Could devise something very simple which kept all the advantages of the old set; comments on this. Is enclosing copies of letters from A.H. Atkins and from the R.E.& S.Board.
With enclosures
a) A.H.Atkins, 2 Oct. 1939; 2½pp, typescript; about sound ranging developments since the last war: W.L. BRAGG/65B/52 SEE W.L. BRAGG/65B/45.
b) F.C.Barnes, Aldwych, 4 Oct.1939; ¼p, typescript: asks for statement of expenses in connection with visit to Shoeburyness. W.L. BRAGG/65B/53

[Lawrence Bragg] to R.A.Stephen, Philips Industrial X-Ray Service  W.L. BRAGG/65B/54  5 Oct. 1939

Contents:
¼p, typescript
Thanks him for particulars of the Philips sound ranging apparatus. Will give details to the authority supervising production of sound ranging sets. Certain parts of the apparatus are most attractive.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/55  5 Oct. 1939

Contents:
Liverpool 3pp, typescript
Discusses Bragg's draft report on the sound ranging apparatus and suggests amendments. Is in complete agreement with Bragg's report. Should not like to vouch for accuracy of locations he could not lay out accurately on the board. On Western Front, survey should be first class in every respect. Ostroid method would possibly be good in moving warfare but would be better suited to conditions in the Near East, where maps hardly exist.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/56  6 Oct. 1939

Contents:
Ministry of Supply 1/3p, typescript
Would like to have copy of Bragg's report as soon as possible. Sir Frank Smith is Director of Instrument Production and R.S.Whipple is with him; they are responsible for production of sound-ranging equipment. Has spoken to Whipple about Bragg's forthcoming paper.

A.J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/57  7 Oct. 1939

Contents:
British Scientific Instrument Research Assoc., London
3¾pp, typescript
Has given considerable thought to Bragg's letter of 5th October. Discusses his meeting with F.E.Smith and [R.S.] Whipple. He pointed out that if Bragg's committee had been asked to make a report ten years ago, might have made strong recommendations but now committee was afraid that strong adverse criticism might merely result in unfortunate delay.
Smith and Whipple are aware of the committee's opinion of the new apparatus and of its view that in practice the Mark II apparatus will have to be used in form most like the old apparatus. The factor of which they have no knowledge is the probable nature of the war. "If the two armies are most likely to sit opposite each other during that period then I think every effort should be made to produce a sound-ranging apparatus which in its turn will produce the type of record associated with the old apparatus. If, on the other hand, there is likely to be any rapid movement, then I think it is fair to admit that in its entirity the old apparatus and old microphone system suffered from a measure of immobility ..." Agrees that compromise should be made.
Does not feel committee can put its very short experience of the apparatus against the prolonged experience of others. Production of the Mark II apparatus should go forward; discusses this. If a prolonged state of seige warfare is going to exist, the sound-ranging sections at the front should be able to use the old type of record. Discusses possibility of a number of old sets being made up or of subsidiary Bridge unites being made for fitment to the Mark II sets. The Association has paid his expenses; comments on this.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/58  9 Oct. 1939

Contents:
2/3p, typescript
Is enclosing report on sound ranging apparatus and some sample films. Would like to visit Sayer on 12th October; comments on this. Will try to bring [A.J.] Philpot but does not think it would be worthwhile for [A.H.] Atkins to come from Liverpool. Hopes Sayer will give them an opportunity to state their views when production of new sets is being considered.

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/65B/59  9 Oct. 1939

Contents:
¼p, typescript
Is enclosing final draft of report. Has sent it to Brig.[A.P.]Sayer. Has incorporated all Philpot's emendations. Is trying to arrange a meeting with Sayer on Thursday.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/60  9 Oct. 1939

Contents:
¼p, typescript
Is enclosing final draft of report. Has sent copy to Brig.Sayer. Has incorporated all Atkins's emendations.

[Lawrence Bragg] to H.J.Gough  W.L. BRAGG/65B/61  9 Oct. 1939

Contents:
¼p, typescript
Is enclosing copy of report on sound-ranging apparatus. Has only one set of films, which he has sent to [A.P.] Sayer. Is hoping to see Sayer on 12th. Would like to talk to Gough if he is free that day.

[A.P.Sayer] to [Lawrence] Bragg  W.L. BRAGG/65B/62  postmark: 10 Oct. 1939

Contents:
Aldwych 1½pp, typescript; telegram
Thursday afternoon at 3pm is suitable for meeting.

A.J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/63  10 Oct. 1939

Contents:
B.S.I.R.A. ¼p, typescript
Pleased Bragg has not delayed in sending off report. Will be away when Bragg goes to see Brig. Sayer.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/64  10 Oct. 1939

Contents:
Liverpool ¼p, typescript
Final draft of report is in accordance with his own views. Will be interested to know if Bragg hears anything further from Brig.Sayer.

F.C.Barnes to [Lawrence] Bragg  W.L. BRAGG/65B/65  4 Oct. 1939

Contents:
Royal Engineer & Signals Board, London
¼p, typescript
Asks for statement of expenses in connection with visit to Shoeburyness.

R.H.Angus to [Lawrence] Bragg  W.L. BRAGG/65B/66  11 Oct. 1939

Contents:
Cambridge ½p, typescript
Understands Bragg may be doing some work with the old sound-ranging instrument which the Survey Company had. He may be in Cambridge for the whole of the academic year; if so, might be able to assist Bragg. His experience of the old type of instrument was gained when he ran a station at North Walsham for long distance transmission research on sound waves. Has not yet had much experience of the new type of instrument; comments on this.

G.R.Ford to [Lawrence] Bragg  W.L. BRAGG/65B/67  12 Oct. 1939

Contents:
Sheringham 11/3pp, typescript
Bragg saw him on 5th October in connection with sound ranging. Is anxious to rejoin the Army; comments on this. Is enclosing copy of War Office letter, dated 21 Dec.1917, accepting him for sound ranging. Is sending amended copy of notes he left, together with list of referees and certificates.
With enclosures
1. Letter from War Office, 21 Dec.1917; 1p, typescript copy; W.L. BRAGG/65B/68.
2. Notes on war service and sound ranging experience; 28 Sept.1939; ¾p, typescript; W.L. BRAGG/65B/69.
3. List of referees and certificates: 1p, typescript; W.L. BRAGG/65B/70.
4. Letter from Ford to the War Office, 25 Sept.1939, saying he is available for Army service; ½p, typescript copy; W.L. BRAGG/65B/71.

[Lawrence Bragg] to R.H.Angus  W.L. BRAGG/65B/72  13 Oct. 1939

Contents:
1/3p, typescript
Thanks Angus for offer of help with the old sound ranging apparatus.
Would like to discuss this with him. Does not think the new apparatus has been developed on sound lines; comments on this. Suggests Angus come to the Cavendish Laboratory to see and discuss the old apparatus.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/73  16 Oct. 1939

Contents:
Liverpool ¼p, typescript
Is enclosing statements of expenses incurred in connection with visits to Shoeburyness and Cambridge. Did not make a note of the first-class return fare from London to Southend; thinks it was 7s.6d.

C.C.Mason to [Lawrence] Bragg  W.L. BRAGG/65B/74  17 Oct. 1939

Contents:
Cambridge Instrument Co.Ltd 1/3p, typed
Ministry of Supply has arranged for a sample model of the Mark II recorder for the sound ranging apparatus, with drawings and instructions, to be sent to the Company, so it can be examined with a view to manufacture.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/75  23 Oct.1939

Contents:
Royal Engineer & Signals Board ¾p, typed
Is enclosing notes on their discussion of the Gun Sound Ranging Report. Films Bragg obtained at Shoeburyness were poorly developed. Is sending set of five films recently obtained from the Mark II recorder at Shoeburyness, to give better idea of the capabilities of the instruments.
Comments on the films. Several user officers have commented very favourably on the films as regards ease and accuracy of reading. The first Mark II set made will be sent to the First Field Survey Regt. for a detailed user report.

Robert S.Whipple to [Lawrence] Bragg  W.L. BRAGG/65B/76  25 Oct. 1939

Contents:
Ministry of Supply 1/3p, typescript
Sorry Bragg is unwell. Will study Bragg's report on the sound ranging apparatus carefully. [C.C.] Mason will tell him when the Mark II apparatus and data reach Cambridge and he then hopes to visit the works.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/77  25 Oct. 1939

Contents:
Ministry of Supply ½p, typescript
Has received report of meeting at R.E.S.B., at which the design of the sound ranging apparatus was discussed. Bragg's suggestions seem to have been carefully examined. Interested to know that Bragg is doing some experiments and working with the Cambridge Instrument Co. Shall discuss question of a scientist for sound ranging with the military representatives concerned. As to the Committee, believes they shall obtain services of the man he mentioned. Would be glad to have a further talk with Bragg.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/78  25 Oct. 1939

Contents:
Liverpool 1¼pp, typescript
Would like to have been with Bragg at interview with [A.P.] Sayer. Will go to see Sayer if Bragg thinks it desirable. The Mark II apparatus must not go into production without embodying the bridge method, the fat galvo strings and the prisms. Is not impressed with the Mark II time-wheel, but it will work. Is anxious to make the most of all [T.G.] Hodgkinson's work. Greatly admires rapidity with which Bragg has done the experiments on the old apparatus. Hopes no official obstacle will obstruct the adoption of these essential Mark II modifications. A first-class scientist to act as technical adviser, is essential; comments on this. All the Computing Officers will need some specialised training. Does not mind Bragg's sending his letter of 2 October on to Brig.Sayer.

[Lawrence Bragg] to R.S.Whipple  W.L. BRAGG/65B/79  26 Oct. 1939

Contents:
¼p, typescript
He failed to carry conviction at meeting with Brigadier Sayer, at which he made certain recommendations about changes in the Mark II design.
Still hopes something may be done. Is looking forward to their conference in Cambridge. Is making some experiments with an old sound ranging set. Wants to se if some simple modifications to the Mark II design might meet their criticisms.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/80  26 Oct. 1939

Contents:
½p, typescript
Regrets Atkins did not come to meeting with [A.P.] Sayer. Sayer has sent him a report. Net result is that their recommendations are not going to be adopted. Is not going to let the matter rest. Sayer sent him films, which are a great improvement on those they saw. [R.S.] Whipple is taking up the question of the manufacture of the apparatus; this may give them a chance to make another attempt to get their points home.

[Lawrence Bragg] to H.J.Gough  W.L. BRAGG/65B/81  26 Oct. 1939

Contents:
½p, typescript
Asks if he might call on Gough on 31st October; comments on this. Has had report of meeting with [A.P.] Sayer. Was listened to very sympathetically, but failed to carry conviction. Unfortunately did not make sure that [A.H.] Atkins and [A.J.] Philpot could attend meeting.
Fears net result of meeting will be that nothing will be done.

[Lawrence Bragg] to F.C.Barnes  W.L. BRAGG/65B/82  26 Oct. 1939

Contents:
¼p, typescript
Is enclosing note of expenses incurred by him and [A.H.] Atkins on visits in connection with report on sound ranging apparatus; comments on this. [A.J.] Philpot has had his expenses paid by the British Scientific Instruments Research Association.
With note of expenses: 2/3p, typescript; W.L. BRAGG/65B/83.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/84  26 Oct. 1939

Contents:
1¼pp, typescript
Thanks Sayer for reports and films. Discusses the films, which are much superior to anything they had seen before. Still thinks the trace should be wider; comments on this. Wishes to suggest emendations to Sayer's report and is enclosing fresh draft; comments on this. Thanks Sayer for listening to the points he raised. Regrets [A.H.] Atkins and [A.J.] Philpot were not present. Tried to make suggestions in no critical spirit. Experience gained in last war gave them certain firm ideas about points of primary and secondary importance in the recording apparatus. Felt the relative importance had been lost sight of in the present apparatus and method. Thanks Sayer for invitation to visit units in France.
With notes on meeting of 12th October to discuss Bragg's report on the present sound ranging apparatus; 3pp. typescript; W.L. BRAGG/65B/85.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/86  26 Oct. 1939

Contents:
Liverpool 1/3p, typescript
Wondered how it was possible to use the prisms without scrapping the general arrangement of the Mark II apparatus but understands that the new method eliminates the prisms; comments on this. If it is possible to incorporate Bragg's modifications in the Mark II machine and get officers of the right type, the Section should be of real value.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/87  27 Oct. 1939

Contents:
Aldwych, London 1½pp, typed & MS
Thanks Bragg for letter. Is prepared to discuss the matter with [A.J.] Philpot and [A.H.] Atkins, but does not think discussion will materially affect the immediate position. Need to equip troops in France as soon as possible with something better than the Mark I set. Production of the Mark II must go ahead as quickly as possible. The Cambridge Instrument Co. may make alterations to speed up production, but alterations affecting performance cannot be permitted. Bragg's modifications must be postponed until production set is available; comments on this. Further development should be aimed at, but such experiment must not delay production of the Mark II set. Discussion with Philpot and Atkins should await delivery of the first production model. Any attempt to experiment with the present model at the Cambridge Instrument Co. should be discouraged as likely to interfere with production. Is to meet [R.S.] Whipple on 3rd November to discuss this. Practical experience of the set in field conditions will be best way of reaching a practical solution. Thanks Bragg for amendments to note of meeting. Is following up possibility of seeing set in action.

P.de K.Dykes [to his father]  W.L. BRAGG/65B/88  27 Oct. [1939]

Contents:
1st Survey Regt., R.A. ½p, MS copy; extract
Asks if there is any objection to using microphones sensitive to all frequencies from O to a few hundreds a second and having set of filters cutting off all frequencies above 5, 10, 20, 40, 80 cycles/sec. A shell causes a high frequency "crack" as it goes through the air and this affects the microphones. Discusses problem of "shell wave".

R.S.Whipple to [Lawrence] Bragg  W.L. BRAGG/65B/89  27 Oct. 1939

Contents:
Ministry of Supply 1/3p, typescript
Conference to discuss sound ranging apparatus will be held at the Cambridge Instrument Co. on 3rd November. Hopes Bragg will be able to attend. Comments on arrangements for meeting.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/90  30 Oct. 1939

Contents:
Liverpool ¼p, typescript
Thanks Bragg for letter. [A.P.] Sayer's report is most disappointing. Doubtless their report has been referred to [T.G.] Hodgkinson and [W.S.] Tucker. Agrees situation should not be left as it is.

H.M.Fordham to [Lawrence] Bragg  W.L. BRAGG/65B/91  31 Oct. 1939

Contents:
Royal Engineer & Signals Board 1/3p, MS
Thanks Bragg for letter. Will be delighted to lunch with Bragg. Is sure [T.G.] Hodgkinson would also like to come.

W.S.Tucker to [Lawrence] Bragg  W.L. BRAGG/65B/92  1 Nov. 1939

Contents:
Shortlands 3¾pp, MS
Is in no way resentful of Bragg's criticisms; comments on this. Does not agree with Bragg on every point, but it is his business to see that valid criticisms are met. There are two policies: the first, to rush out Mark II sets to meet present needs; the second, to work out the answer to Bragg's programme quickly and to put the solution into practical form. Letter will not be interpreted as being in conflict with Brig.[A.P.] Sayer, but as an indication of a willingness to work wholeheartedly on new ideas. Sound ranging is only one of his activities. Vexed that the films were so poor. Got better ones for Bragg. Thanks Bragg for his offer of hospitality.

T.G.Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/93  1 Nov. 1939

Contents:
Southend-on-Sea 2/3p, MS
Thanks Bragg for letter and for invitation to lunch. Regrets he will not be able to see Bragg before the afternoon.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/94  3 Nov. 1939

Contents:
Larkhill 2/3p, typescript
Thanks Bragg for letter. Darwin will not come. Has written to [R.H.] Angus and is taking up the question of Rackham, Bellamy and Cook. They are in the middle of reorganisation. Would like Bragg and [A.J.] Philpot to visit in January and lecture to the cadets and Sound Ranging Battery.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/95  6 Nov. 1939

Contents:
¼p, typescript
Thanks Imbert-Terry for invitation to give talks at Larkhill. Term starts on 15th January and a visit before then would be convenient.
Interested Imbert-Terry is following up his suggestions about instructors.

[Lawrence Bragg] to P.de K.Dykes  W.L. BRAGG/65B/96  7 Nov. 1939

Contents:
11/3pp, typescript
Was very interested in the extract from Dykes' letter. In the last war, members of sound ranging sections did experiments. Their greatest discovery was the Tucker microphone; comments on this. Discusses Dykes' proposal for using a series of filters. Some new types of microphone might have been developed. Has been promised a visit to France to see the sections in action. Hopes that will give him a chance to discuss problems with Dykes.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/97  8 Nov. 1939

Contents:
Royal Engineer & Signals Board 2pp, MS
Apologises for delay in replying to Bragg's letter of 29th October.
Regrets he cannot accept Bragg's invitation for 28th November; comments on this. Cambridge Instrument Co. is aiming at a surprisingly good production pace. Some of Bragg's suggestions will be tried out for possible incorporation in future sound ranging sets. The set in France is hardly in active operation. Will let Bragg know as soon as a suitable opportunity for inspection occurs.

H.M.Fordham to [Lawrence Bragg]  W.L. BRAGG/65B/98  8 Nov. 1939

Contents:
Royal Engineer & Signals Board ¾p, MS
Thanks Bragg for his hospitality. Bragg's work has aroused the interest of all those concerned in sound ranging.

Robert S.Whipple to [Lawrence] Bragg  W.L. BRAGG/65B/99  10 Nov. 1939

Contents:
Ministry of Supply 1/3p, typescript
Is enclosing minutes of Conference held at Cambridge Instrument Co. to discuss construction of twelve Mark II sound ranging recorders. Sorry there seems to be no chance of testing the thickening of the centre of the harp strings officially. Has little doubt that the device will eventually be adopted. Thanks Bragg for his hospitality.
With minutes of Conference, 3 Nov.1939: 2pp, typescript; W.L. BRAGG/65B/100.

Harold Hemming to [Lawrence] Bragg  W.L. BRAGG/65B/101  15 Nov. 1939

Contents:
Larkhill 3¼pp, MS
He is commanding C Battery (flash spotting) in the 40th Artillery Survey Regiment; comments on the organisation. If D Battery (sound ranging) is to have a major, he will be a soldier and scientist combined. Asks whom Bragg would recommend. All future "flash & sound" men and officers and all survey cadets will come through the Regiment.

P.de K.Dykes to [Lawrence] Bragg  W.L. BRAGG/65B/102  16 Nov. 1939

Contents:
1st Survey Regt. R.A. 2½pp, MS
Thanks Bragg for letter about sound ranging. Captain Browning suggested that the string galvanometer had too long a periodic time and too little damping and proposed a neon tube, photographically recorded, and suggested a microphone sensitive to much higher frequencies, and filters which could be switched on at will to remove shell wave.
Discusses these proposals. They have obtained no locations. British troops are manning part of the frontier where there has been no fighting. They are being moved about so much, have no time to train reservists and militiamen, let along do any experimenting. The base they have surveyed is a 6 microphone, 10000 metre, approximately straight base.

E.T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/103  16 Nov. 1939

Contents:
Ministry of Supply ½p, typescript
They have examined with interest the descriptions of the Philips-Miller sound ranging equipment. A.D.E.E. are well acquainted with the system, but believe it to be more profitable to concentrate on the development of equipment already in use.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/65B/104  20 Nov. 1939

Contents:
21/3pp, typescript
Was very pleased to learn that Hemming is looking after flash-spotting at Larkhill. Does not know how easy it will be to bring in an outsider to take charge of sound ranging. Discusses his inspection of the Mark II apparatus, the report he prepared with [A.J.] Philpot and [A.H.] Atkins and the failure of the R.E.& Signals Board to adopt any of their suggestions. He, Philpot and Atkins might have carried more conviction if they had been more restrained in their criticisms. Feels that the development of the apparatus has been disappointing; comments on this.
Thinks all will be well if Sound Ranging Sections at the Front have at least one first-rate scientific officer in each and a first-rate mechanic. Discusses need to regard the methods as elastic. Thinks Billy Darwin was justified in declining H.Imbert-Terry's offer. [R.H.] Angus did not accept the position offered; comments on this. [A.H.] Atkins would be splendid, but doubts whether he would give up his business. Imbert-Terry suggested he (B) does not give talks at Larkhill about his sound ranging experiences until the New Year.
Wonders whether an earlier visit to Larkhill might be profitable; comments on this.

[Lawrence Bragg] to R.A.Stephen, Philips Industrial X-ray Service  W.L. BRAGG/65B/105  20 Nov. 1939

Contents:
¼p, typescript
Is returning pamphlets on sound ranging. [E.T.] Paris was pleased to have the information. The Air Defence Experimental Establishment believes it would be more profitable to concentrate on the development of equipment already in use.

Harold Hemming to [Lawrence] Bragg  W.L. BRAGG/65B/106  [ca. 21 Nov.1939]

Contents:
Larkhill 2¾pp, MS
Thanks Bragg for letter. Did not show letter to Imbert-Terry. Told Imbert-Terry that Bragg wanted to meet him. Suggests dates.

Philips Industrial X-Ray Service (R.A.Stephen) to [Lawrence] Bragg  W.L. BRAGG/65B/107  22 Nov. 1939

Contents:
London ¼p, typescript
Acknowledges letter of 20 November.

Royal Engineer & Signals Board (F.C.Barnes) to [Lawrence] Bragg  W.L. BRAGG/65B/108  23 Nov. 1939

Contents:
Aldwych, London ¼p, typescript
Asks Bragg to certify as correct the enclosed claim.

A.F.Rawdon-Smith to [Lawrence] Bragg  W.L. BRAGG/65B/109  28 Nov. 1939

Contents:
Cambridge ½p, typescript
Thanks Bragg for letter of 24 November. Loan of a wave analyser for a brief time would not held very much as they need an analyser for an indefinite period. They are working on the design and construction of a portable amplifier system with which they hope to test the intelligibility of speech under various conditions in aircraft in flight

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65B/110  [ca. 28/29 Nov. 1939]

Contents:
Larkhill 2½pp, typescript
Sound-rangers are commanded by a man he considers "small fry"; comments on this. The sooner Bragg can visit the better. Comments on enclosed letter from Atkins. Suggests dates for Bragg's visit.
With enclosure
A.H.Atkins to H.H.Hemming, 28 Nov.1939; 1/3p, typescript; W.L. BRAGG/65B/111. Was pleased to learn that Hemming is working at Larkhill. Would like to join him if he could find a way of getting his business running smoothly; comments on this.

E.T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/112  29 Nov. 1939

Contents:
Ministry of Supply 1/3p, typescript
Chief Superintendent of the Projectile Development Establishment has suggested that Bragg might be willing to advise on the relative merits of sound-ranging and mirror systems for work on fuse scale observations. Asks Bragg to let him know if he is willing to help.

[Lawrence Bragg] to E.T.Paris  W.L. BRAGG/65B/113  1 Dec. 1939

Contents:
1/3p, typescript
Will be pleased to advise on the relative merits of sound ranging and mirror systems for Crowe's work. Is anxious to act in "tactful co-operation" with [T.G.] Hodgkinson; comments on this. Could give an unbiassed opinion on the accuracy of the results. Suggests first step would be to attend one of Hodgkinson's shoots and study way in which the results are worked out.

E.T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/114  5 Dec. 1939

Contents:
Ministry of Supply 1/3p, typescript
Thanks Bragg for agreeing to advise about accuracy of sound-ranging and mirror systems for fuse scale observations. Would like opinion of the comparative accuracy likely under Aberporth conditions before the new installation is put in. When Bragg wishes to discuss the work or see a shoot, he should contact the President, R.E.S.B.

Lieut-Col.Sir Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/115  5 Dec. 1939

Contents:
Larkhill 1¼p, typescript
Suggests Bragg give a talk at Larkhill during week of 7 January; comments on this. Wonders whether [A.J.] Philpot would give a talk about sound ranging in Palestine.

Royal Engineer & Signals Board (F.C.Barnes) to [Lawrence] Bragg  W.L. BRAGG/65B/116  6 Dec. 1939

Contents:
Aldwych, London ¼p, typescript
Is enclosing cheque in settlement of Bragg's claim.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/117  6 Dec. 1939

Contents:
Royal Engineer & Signals Board 2/3p, typed
Asks if Bragg would comment on enclosed report from Capt.Browning and commentary by [W.S.] Tucker; comments on these. Would welcome Bragg's views as an independent judge.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/118  7 Dec. 1939

Contents:
½p, typescript
Suggests he visit Larkhill on 8th January. Believes A.J.Philpot would be pleased to talk about his experience in Palestine. Would be helpful if they came at the same time, then they could both discuss general sound-ranging tactics in the last war with Imbert-Terry.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/119  8 Dec. 1939

Contents:
Royal Engineer & Signals Board ½p, typed
Has seen that Bragg has agreed to act as an independent assessor of the respective merits of sound ranging and mirror systems for fuse scale observation work. Invites Bragg to visit Shoebury to see demonstration of the sound ranging system. Is enclosing copy of the instructions given to Capt.Hodgkinson.
With enclosure
A.P.Sayer to Capt.Hodgkinson, A.D.E.E., 8 Dec. 1939; ½p, typescript; W.L. BRAGG/65B/120: Lawrence Bragg has agreed to act as independent assessor of the accuracy of the sound ranging and mirror systems as applied to the P.D.E. range at Aberporth. Bragg will visit Hodgkinson at Shoebury; comments on this.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/121  9 Dec. 1939

Contents:
¼p, typescript
Thanks Sayer for letter with Browning's comments on the present sound-ranging apparatus. Will send his observations. Is writing to Hodgkinson to fix a visit to Shoeburyness.

G.R.Ford to [Lawrence] Bragg  W.L. BRAGG/65B/122  9 Dec. 1939

Contents:
Sheringham 1p, MS
Bragg saw him in October in connection with his wish to rejoin the Army in particular sound-ranging. Passed a Medical Board and his application for Officers' Emergency Reserve went through No.6 Reception Unit on 18th September. Has not yet heard whether he has been appointed. Asks if Bragg could let him know what his prospects are.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/123  11 Dec. 1939

Contents:
½p, typescript
Was interested in Browning's comments. Comments on the Philips-Miller system, the chief advantage of which is that it involves no photography.
Felt this was outweighed by the disadvantage of complex amplifying devices in the recorder. Microphone is not as good as the Tucker microphone. Agrees in general with Tucker's comments, although there is some tendency towards resentment. Suggestions for improving the apparatus from officers using it at the Front should be encouraged.
With comments on proposals by Captain Browning for modifications of the gun sound ranging apparatus; 2pp typescript + copy; W.L. BRAGG/65B/124 & W.L. BRAGG/125.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/126  11 Dec. 1939

Contents:
Larkhill 1/3p, typescript
Comments on arrangements for Bragg's visit.

A.J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/127  12 Dec. 1939

Contents:
B.S.I.R.A. ¼p, typescript
Is going to Larkhill on 8th January to give a talk on sound ranging in Palestine.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/128  12 Dec. 1939

Contents:
Royal Engineer & Signals Board ¼p, typed
Thanks Bragg for helpful comments on the G.S.R. Report, dated 11 Dec. Will let Bragg see their reply and any comments from Artillery Branches.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/129  13 Dec. 1939

Contents:
¼p, typescript
Has heard that [A.J.] Philpot hopes to visit Larkhill at the same time as he does. Comments on arrangements for visit.

[Lawrence Bragg] to A.[P.]Sayer  W.L. BRAGG/65B/130  13 Dec. 1939

Contents:
¼p, typescript
Acknowledges letter. Would be interested to see Sayer's reply and any comments from the Artillery Branches.

[Lawrence Bragg] to Captain [T.G.] Hodgkinson  W.L. BRAGG/65B/131  14 Dec. 1939

Contents:
¼p, typescript
Brigadier [A.P.] Sayer asked him to arrange direct with Hodgkinson a visit to study Hodgkinson's methods of locating bursts by sound ranging. Suggests dates.

[T.G.] Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/132  postmark: 15 Dec.1939

Contents:
Shoeburyness ½p, typed; telegram
First week of January would be suitable for visit.

T.G.Hodgkinson to [Lawrence] Bragg  W.L. BRAGG/65B/133  15 Dec. 1939

Contents:
Air Defence Experimental Establishment, Foulness Is.
2pp, MS
The Superintendent of Experiments will show Bragg the mirror system. Weather is against fuse scale shoots. Very busy with radio work, so January would be better for Bragg's visit. Suggests Bragg come the night before. Has does enough work on the map to get a fair idea of the problem.

[Lawrence Bragg] to A.D.Crow  W.L. BRAGG/65B/134  16 Dec. 1939

Contents:
1/3p, typescript
Comments on his proposed visit to Shoeburyness to see a practical demonstration of the sound ranging system as applied to fuse scale shoots. Asks if Crow could give him any further information to help him assess the scheme.

[Lawrence Bragg] to [T.G.] Hodgkinson  W.L. BRAGG/65B/135  18 Dec. 1939

Contents:
1/3p, typescript
Suggests he spend 3rd January with Hodgkinson; comments on this and on travel arrangements.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/136  18 Dec. 1939

Contents:
Ministry of Supply ¼p, typescript
Asks Bragg to forward report on the accuracy of the Aberporth lay-out direct to him. In taking on the work, Bragg will be acting as consultant under the emergency scheme.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/137  18 Dec. 1939

Contents:
Liverpool ¼p, typescript
Has suggested to [Harold] Hemming that he (A) visit Larkhill in the New Year. Would like to be there when Bragg visits so they can have a talk.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/138  18 Dec. 1939

Contents:
Larkhill ¾p, typescript
Suggests Bragg visit Larkhill on 8th January; comments on this.

R.H.Angus to [Lawrence] Bragg  W.L. BRAGG/65B/139  19 Dec. 1939

Contents:
Cambridge 1¼pp, typescript
Is enclosing curves showing results of tests on the specimen of D.8 cable; discusses these. In January will try to get some records of sound waves using a D.8 cable and a very short line. Would like to go to Larkhill with Bragg on 8th January so he could learn something about the Mark I instrument.

A.J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/140  20 Dec. 1939

Contents:
B.S.I.R.A., London 1¼pp, typescript
Comments on arrangements for visit to Larkhill. In his talk, he will confine himself to sound ranging in Palestine under present conditions of warfare. Presumes they will not require dinner jackets.

Harold Hemming to [Lawrence] Bragg  W.L. BRAGG/65B/141  [ca. 20 Dec. 1939]

Contents:
Larkhill 3¼pp, MS
As a result of a talk with the Colonel and Adjutant, sent wire telling Bragg not to come to Larkhill. The Colonel will not try to get a senior Sound Ranger until the War Office agrees to give the man the rank of Major; comments on this. No chance of Meigh getting the job; comments on this. Asks if there is any chance of Bragg's seeing him in London.

[Lawrence Bragg] to [Harold] Hemming  W.L. BRAGG/65B/142  21 Dec. 1939

Contents:
1/3p, typescript
Was relieved not to have to visit Larkhill yesterday and is looking forward to visit on 8th. [A.H.]Atkins would also like to visit Larkhill then; comments on this.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/143  21 Dec. 1939

Contents:
½p, typescript
Outlines arrangements for his visit to Larkhill on 8th January and suggests Atkins arrange his own visit with [Harold] Hemming.

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/65B/144  21 Dec. 1939

Contents:
1/3p, typescript
Gives details of possible trains for visit to Larkhill and asks Philpot to make arrangements for journey.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/145  21 Dec. 1939

Contents:
¼p, typescript
Thanks Imbert-Terry for invitation to dine and stay the night. Asks if he will need a dinner jacket. [A.J.]Philpot will let Imbert-Terry know what train they will get.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/146  28 Dec. 1939

Contents:
Liverpool ¾p, typescript
Comments on his unsuccessful attempt to find someone to manage the business, should he rejoin the Army. Asks if Bragg has any sound ranger in mind to work with [Harold] Hemming. Danger of the good work done in the last war being entirely lost. Sound ranging can provide much valuable information which cannot be obtained by other means, and can construct a complete history of all hostile batteries on a given front. If Bragg has someone to do the job, he (A) might not need to visit Salisbury Plain but would like to visit Larkhill with Bragg.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/147  29 Dec. 1939

Contents:
Liverpool ¼p, typescript
[A.J.]Philpot should be quite good [for sound ranging job]. Will come to London on 7th and go to Salisbury with Bragg next day.

A.J.Philpot to [Lawrence] Bragg  W.L. BRAGG/65B/148  1 Jan. 1940

Contents:
B.S.I.R.A. ¼p, typescript
Has told [H.]Imbert-Terry that they will arrive at Andover Junction at 12.52pm. Hopes it is warmer then.

R.S.Broke to [Lawrence] Bragg  W.L. BRAGG/65B/149  2 Jan. 1940

Contents:
Larkhill ½p, typescript
Sir Henry Imbert-Terry is away. Asks Bragg to confirm travel arrangements for his visit. Would be easier to find a suitable room for Bragg's lecture in the afternoon. Will arrange overnight accomodation. Has written to [A.H.]Atkins suggesting he might like to visit at the same time.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/150  3 Jan. 1940

Contents:
¼p, typescript
Gives details of travel arrangements for visit [to Larkhill].

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/151  4 Jan. 1940

Contents:
Liverpool ¾p, typescript
Comments on arrangements for visit [to Larkhill]. Bragg's information about the three-fold authority handling the apparatus suggests it may be more difficult to get things done than in the last war. Thinks it will be more difficult to develop the art of sound ranging under R.A. control than it was under Survey. Whoever takes on the job at Larkhill will need Bragg's strong support and the assurance that Bragg's recommendations would be put into effect.

G.M.Carrie to [Lawrence] Bragg  W.L. BRAGG/65B/152  5 Jan. 1940

Contents:
1st Survey Regt. R.C.A., Montreal 1¼pp, typed
Has been given the job of putting together a Survey Regiment R.A. Has only a slight knowledge of recent developments in sound ranging. Asks for information about recording methods. Equipment will probably not be available in Canada for some time. If they had sufficient information, could build equipment suitable for training purposes. Has been getting a lot of help from McGill University. Keyes is anxious to go further on sound ranging. Understands the handbook on sound ranging is in draft form.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/153  10 Jan. 1940

Contents:
2/3p, typescript
Thanks Imbert-Terry for his hospitality. Saw Sir Maurice Taylor, Military Adviser to the Ministry of Supply. Told Taylor he thought it would be a great advantage to concentrate the tactical development of gun location at Salisbury Plain. Taylor saw administrative difficulties but thought some solution might be found. Mentioned Imbert-Terry's idea of making it a school of artillery survey.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/154  10 Jan. 1940

Contents:
¾p, typescript
Saw Sir Maurice Taylor, Military Adviser to the Ministry of Supply, and outlined plan of getting the tactical development of flash spotting and sound ranging and the survey work concentrated at one centre. Taylor saw several administrative difficulies but said he would go into the matter with [H.J.]Gough. Hopes Atkins will be able to take the job on.
Was pleased to see Atkins again.

[Lawrence Bragg] to H.J.Gough  W.L. BRAGG/65B/155  11 Jan. 1940

Contents:
2pp, typescript
Called at Ministry of Supply and talked to Sir Maurice Taylor. Visited the Artillery Survey Regiment at Larkhill. [Harold] Hemming is in charge of the training in flash spotting. Meigh is looking after sound ranging; he is a good man, but not an expert. Sir Henry Imbert-Terry is trying to persuade [A.H.]Atkins to take charge of sound ranging. Discusses possibility of making one centre responsible for developing flash spotting and sound ranging and gun location generally. Thinks Hemming and Atkins are ideal men to look after flash spotting and sound ranging; discusses possibility of the two men collaborating at Larkhill.
In the last war, success or failure in sound ranging depended on the selection and training of men and on the rapid interchange of experience about the best way of meeting new conditions. Comments on the efficiency of sound ranging. This war will bring entirely new problems. For both sound ranging and flash spotting sections need men who can build on the experiences of the last war and have the imagination to adopt methods to meet new conditions. Hopes this would not be inconsistent with the R.E. and Signals Board having responsibility for the development of the apparatus. Should like to discuss the matter.

R.H.Angus to [Lawrence] Bragg  W.L. BRAGG/65B/156  12 Jan. 1940

Contents:
Cambridge ½p, typescript
Discusses films he has enclosed. Used the old battery bridge circuit connected to one resonator by a short pair of copper wires and to a second resonator by D.8 cable. Response of the resonators and microphones is more important than the different transmission characteristics of the two circuits.
With 4 films and explanatory note (¼p, typescript): W.L. BRAGG/65B/157-161

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/162  12 Jan. 1940

Contents:
Liverpool 1½pp, typescript & MS
Discusses his efforts to find ways of carrying on his business in his possible absence. Centralisation of tactical development of flash spotting and sound ranging on Salisbury Plain has to be agreed, and the status of the Salisbury Plain units with respect to those in France.
If he took up appointment, assumes that detailed alterations to the apparatus and method would be within his power; comments on this. Would like to have a first class scientist on the sound ranging staff. Feels there would be no difficulty in obtaining the help and support of Sir Henry [Imbert-Terry]. Comments on his son, who might read physics at Cambridge.

[Lawrence Bragg] to R.H.Angus  W.L. BRAGG/65B/163  13 Jan. 1940

Contents:
¼p, typescript
Thanks Angus for films; comments on these. Should like to join the discussions, should Angus think of laying out a new base or trying new positions for bursts.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/164  15 Jan. 1940

Contents:
¼p, typescript
Was delighted to get Atkins's letter. Has written to [H.J.]Gough and will see him soon. Sir Maurice Taylor has promised to see what can be done. If Atkins goes to Larkhill to direct the development of sound ranging, it will be the best arrangement possible.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/165  16 Jan. 1940

Contents:
Larkhill 1/3p, typescript
They all enjoyed Bragg's and [A.J.]Philpot's lectures. Agrees that they must go gently about the idea of a school of artillery survey.
Will be glad to hear from Bragg after he has spoken to [H.J.]Gough.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/166  17 Jan. 1940

Contents:
Liverpool 1/3p, typescript
Thanks Bragg for letter. Was to let Sir Henry Imbert-Terry know if arrangements could be made to carry on his business in his absence.
Asks if Bragg is in touch with Imbert-Terry or whether he should write.

H.J.Gough to [Lawrence] Bragg  W.L. BRAGG/65B/167  18 Jan. 1940

Contents:
Ministry of Supply, London ¼p, MS
Thanks Bragg for letting him see [A.H.]Atkins' letter.

[Lawrence Bragg] to A.H. Atkins  W.L. BRAGG/65B/168  19 Jan. 1940

Contents:
2/3p, typescript
H.W. Ash has given his name as a referee in application for membership of the Institution of Mechanical Engineers. Asks if he is the Ash who was a sound ranger. Organisation of sound ranging at Larkhill is being considered by the General Staff. Will see [H.J.] Gough next week. Gough knows Atkins would be willing to take on the job if it is made sufficiently important. A.H. Jay has asked him for further details of a post connected with the Canadian Magnesite Co. Asks if he might outline the possibilities of the other post to Jay or if Atkins would like to contact Jay direct.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/169  20 Jan. 1940

Contents:
1/3p, typescript
If Imbert-Terry were able to organise the development of sound ranging at Larkhill in the way he described and decided to invite [A.H.] Atkins to take on the job, Atkins would accept; comments on this. Next step will be for Sir Maurice Taylor to consider the letter he, Bragg, sent to Gough.

[Lawrence Bragg] to H. Hemming  W.L. BRAGG/65B/170  20 Jan. 1940

Contents:
½p, typescript
Has high hopes that visit to Larkhill may have results. [A.H.] Atkins would accept invitation to organise work at Larkhill. Wrote to [H.J.] Gough about the advantages of having a strong group at Larkhill looking after the tactical development of sound ranging. Will be seeing Gough next week.

[Lawrence Bragg] to A.H. Atkins  W.L. BRAGG/65B/171  20 Jan. 1940

Contents:
¼p, typescript
Has told Sir Henry Imbert-Terry that Atkins might be free to accept an invitation. Suggests Atkins write to Imbert-Terry outlining the conditions he wold have to meet if Atkins were to accept.

A.P. Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/172  22 Jan. 1940

Contents:
R.E. & Signals Board, London ½p, typed
Apologises for delay in replying to letter of 13 December. Is enclosing copy of his remarks and copy of General Davidson's letter. Captain Browning would like to meet Bragg and discuss the matter further. Asks Bragg to suggest dates.
With enclosures
a) Comments on sound ranging report by Capt. Browning: 1p, typed; 65B/173
b) Major-Gen. A.E. Davidson to M.G.R.A.-B.E.F., 23 Dec. 1939, London; 2/3p, typed; 65B/174. Capt. Browning's suggestions about gun sound ranging have been examined by his technical experts and by an independent expert, Prof. Bragg. All agree present system is superior to that proposed by Browning. Always glad to get proposals for the improvement of existing methods. If Browning would like to discuss this further, could be put in touch with Bragg or the R.E.S. Board.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/175  22 Jan. 1940

Contents:
Larkhill 2/3p, typescript
Thanks Bragg for letter about [A.H.]Atkins. Hopes to be able to give Atkins a definite offer soon. Understands Atkins wanted time to make arrangements to carry on his business.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/176  22 Jan. 1940

Contents:
Liverpool 1/3p, typescript
[G.M.] Carrie has sent him copy of letter to Bragg. Carrie has added note which suggests his unit may be sent to Britain for training. Could be rapidly trained on Salisbury Plain.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/177  22 Jan. 1940

Contents:
Liverpool ¼p, typescript
Acknowledges letter. Is enclosing copy of letter to Sir Henry Imbert-Terry.
With enclosure: 22 Jan.1940; 2/3p, typescript copy; 65B/178
Has made provisional arrangements which would enable him to work at Larkhill; discusses this. Bragg's recommendations should be put into effect. Enjoyed his visit to Larkhill.

Harold Hemming to [Lawrence] Bragg  W.L. BRAGG/65B/179  22 Jan. 1940

Contents:
Larkhill 3¼pp, MS
The Colonel has told the War Office he would not invite people of [A.H.] Atkins's calibre unless he could offer them suitable rank. Asks if Bragg knows of any scientific body which would give him a £50-£100 grant for experimental stores. Army will pay but the system is too slow. Bragg's lecture was a great success.

[Lawrence Bragg] to A.P.Sayer  W.L. BRAGG/65B/180  23 Jan. 1940

Contents:
1/3p, typescript
Should be delighted to see Browning. Comments on this and suggests suitable dates.

[Lawrence Bragg] to G.M.Carrie  W.L. BRAGG/65B/181  24 Jan. 1940

Contents:
½p, typescript
Interested to know Carrie is setting up a Survey Regiment R.A. Is investigating the possibility of sending some apparatus to Carrie in Canada; discusses this. If he cannot send a set, will try to get permission to send a complete description. Is trying to do the same for flash spotting which is under the control of [Harold] Hemming.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/182  24 Jan. 1940

Contents:
¼p, typescript
Is enclosing copy of his letter to [G.M.] Carrie. Heard from Imbert-Terry that arrangements seem to be going ahead. [A.H.] Jay is not very keen to go to Canada, but is keen to hear if anything can be done with the Consett Iron Co.

H.M.Fordham to [Lawrence] Bragg  W.L. BRAGG/65B/183  24 Jan. 1940

Contents:
R.E.& Signals Board, London ¼p, typed
Thanks Bragg for letter about Browning's visit. As soon as they can get in touch with Browning, will let Bragg know time, place and date of meeting.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/65B/184  26 Jan. 1940

Contents:
½p, typescript
Is enclosing note from [G.M.] Carrie. Trying to find out if they can send a set to Carrie in Canada or if Carrie will be coming to England soon; comments on this. Will take up Hemming's difficulty about stores with [E.T.] Paris. Scientific bodies cannot give money for war work.
Ridiculous that work should be held up for lack of such small sums. Comments on this.
With copy of Carrie's letter of 5 Jan. (65B/152): 65B/185: and of Bragg's reply, 24 Jan. (65B/181): 65B/186.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/187  27 Jan. 1940

Contents:
Larkhill 1¾pp, typescript
Strong letter has been sent to the War Office endorsing Bragg's suggestions and demanding the immediate posting and recognition of [A.H.] Atkins and [H.] Hemming and the granting of an immediate establishment.
[A.H.] Atkins has made provisional arrangements to come. Asks if Bragg could arrange the exemption from service of Atkins's partner; comments on this.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/188  29 Jan. 1940

Contents:
¼p, typescript
Pleased the scheme for a Larkhill school seems to be going ahead. Is sure they can do something about [A.H.] Atkins, but is not sure if it is the right moment. Will mention the problem to [E.T.] Paris.

[Lawrence Bragg] to [Harold] Hemming  W.L. BRAGG/65B/189  30 Jan. 1940

Contents:
½p, typescript
Might be able to get some equipment made for Hemming in the laboratory. Discusses this and asks Hemming to visit Cambridge to discuss the problem.

R.E.& Signals Board (H.M.Fordham) to [Lawrence] Bragg  W.L. BRAGG/65B/190  30 Jan. 1940

Contents:
Aldwych ¼p, typescript & MS
Have not yet had any information about Captain Browning. Will send it as soon as possible.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/191  5 Feb. 1940

Contents:
Liverpool ½p, typescript
Has had further letter from Henry Imbert-Terry and a form from the War Office. First appointment would be as a Major Instructor of Gunnery. Has also had letter from [H.W.] Ash about Associate Membership of the Institution of Electrical Engineers. Has told Imbert-Terry he will go to Larkhill as soon as possible after he receives official instructions.

R.E.& Signals Board (H.M.Fordham) to [Lawrence] Bragg  W.L. BRAGG/65B/192  5 Feb. 1940

Contents:
Aldwych ½p, typescript
Thanks Bragg for helpful visit. Not likely that suitable opportunity for Bragg to visit France will arise for some time. Capt.Browning's leave starts on 20th February. Asks Bragg to suggests dates for meeting. Will welcome copy of Bragg's report on Aberporth.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/193  8 Feb. 1940

Contents:
½p, typescript
Imbert-Terry seems delighted with the progress of his scheme. Imbert-Terry asked if he could do anything to ensure that Atkins' partner was reserved if Atkins goes to Larkhill. Thinks it would be helpful if Atkins were to write to [E.T.] Paris about the matter. He is Chairman of the Physics Committee of the Advisory Council of the Ministry of Supply. Hopes the Committee will take an interest in flash spotting and sound ranging research.

E.T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/194  8 Feb. 1940

Contents:
Ministry of Supply ¼p, typescript
Has not been able to do anything effective about getting sound ranging equipment and information for the Canadian troops. Matter lies between the War Office and Canada. Brig.Younger suggested the letter from G.M. Carrie be sent to the Commandant, School of Artillery, Larkhill.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/65B/195  [ca.8 Feb. 1940]

Contents:
Larkhill 21/3pp, MS
Thanks Bragg for offer of help with experimental work. At present he is getting what he needs through regular channels. McNaughton told him to write to [G.M.] Carrie about flash spotting and said it would be fine if Bragg sent apparatus or drawings of the sound ranging apparatus to Carrie. Thinks he can detect the effect of Bragg's influence already.
Canadian sound rangers will not be coming to England for a long time.

A.P.Sayer to [Lawrence] Bragg  W.L. BRAGG/65B/196  12 Feb. 1940

Contents:
R.E.& Signals Board 2pp, MS
Bragg's proposals about the transfer of G.S.R. work to Larkhill have come to his attention. Appreciated remarks in Bragg's letter. Bragg's proposal enabled him to put on an official basis his suggestion that G.S.R. work should be transferred to direct control by the D. of Artillery. Has recommended the complete transfer of the G.S.R.; feels the experimental work and development must go hand in hand. Thinks the Board's link with the experimental work should be maintained. Pleased to see Bragg's efforts to bring in experienced associates. Asks if there would be a place for [W.S.] Tucker; comments on this. Was a bit annoyed by [E.T.] Paris's minute attributing certain adverse comments on their work to Bragg; comments on this.
With memorandum on proposal to transfer G.S.R. work away from the R.E.S. Board, 9 Feb.1940: 2½pp, typescript; W.L. BRAGG/65B/197.

[Lawrence Bragg] to [Harold] Hemming  W.L. BRAGG/65B/198  13 Feb. 1940

Contents:
¼p, typescript
Is enclosing copy of letter from [E.T.] Paris. Asks if Hemming or Imbert-Terry would take up the matter with the Commandant, School of Artillery. Thanks Hemming for letter. Hopes their schemes are progressing.
With enclosure: copy of letter from Paris to Bragg, 8 Feb.1940 (65B/194); 65B/199.

R.E.& Signals Board (H.M.Fordham) to [Lawrence] Bragg  W.L. BRAGG/65B/200  20 Feb. 1940

Contents:
Aldwych 2/3p, typescript
Capt.Browning's leave lasts until 29th February and he is staying in London. Comments on possible arrangements for Bragg and Browning to meet.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/201  21 Feb. 1940

Contents:
Liverpool 2/3p, typed & MS
Is going to Larkhill to join the 40th Survey Training Regiment. The first officers' course begins on 30 March. Is still worried about the straight line base; comments on this and on possibility of reverting to a standard curved one. Would like to have Bragg's views.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/202  23 Feb. 1940

Contents:
¾p, typescript
Received memorandum from [A.P.] Sayer. Sayer has been shown copy of his letter saying that experiments on tactical methods of sound ranging and flash spotting could be carried out at Larkhill. Sayer suggested all experimental development be transferred to Larkhill and recommended that the existing staff be attached to Larkhill and continue to develop sound ranging. This would leave them exactly where they were. Welcomed Imbert-Terry's proposal to recruit men and organise experiments at Larkhill because he felt it was so necessary to get new people working on sound ranging problems. Awkward to appoint [A.H.] Atkins and then have to take [W.S.] Tucker and [T.G.] Hodgkinson as well. Problem needs very careful consideration.

[Lawrence Bragg] to A.P.Sayer  W.L. BRAGG/65B/203  29 Feb. 1940

Contents:
¼p, typescript
Pleased they can arrange a meeting on 6th. Regrets he cannot accept invitation to lunch.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/204  29 Feb. 1940

Contents:
Larkhill 1/3p, typescript
Thanks Bragg for letter, with which he agrees. Has sent a wire to Bragg asking if he would see [A.H.] Atkins. Atkins knows his views.
His own position is delicate until Larkhill is officially recognised as a School. Would like Bragg to be their link with D. of A. & Supply.

[Henry] Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/205  postmark: 29 Feb.1940

Contents:
Larkhill 1/3p, typed; telegram
Asks if Bragg could see [A.H.] Atkins at the weekend.

R.E.& Signals Board (H.M.Fordham) to [Lawrence] Bragg  W.L. BRAGG/65B/206  29 Feb. 1940

Contents:
Aldwych ¼p, typescript
Brigadier Sayer will be pleased to see Bragg on 6 March for preliminary discussion before the first meeting of the General Physics Committee of the Advisory Council on Scientific Research & Technical Development.

S.C.Browning to [Lawrence] Bragg  W.L. BRAGG/65B/207  1 March 1940

Contents:
Cavalry Club, London 3½pp, MS
Thanks Bragg for seeing him. Has visited [A.H.] Atkins at Larkhill and had a long and valuable talk. First step is to take delivery of the Mark II Sound Recording set, which they hope will solve many of the present difficulties. Asks if he might seek Bragg's advice should problems arise in future.

[Lawrence Bragg] to S.C.Browning  W.L. BRAGG/65B/208  2 March 1940

Contents:
¼p, typescript
Thanks Browning for note. Was pleased to talk to him. [A.H.] Atkins will tell him about his discussion with Browning. Should be interested to hear what is going on.

[Lawrence Bragg] to [E.] T.Paris  W.L. BRAGG/65B/209  4 March 1940

Contents:
¼p, typescript
Thanks Paris for letter. Will be at the Ministry of Supply on 13 March for discussion of air burst locations. [A.H.] Atkins hopes to see Paris. They are anxious to consult him about future plans.

[Lawrence Bragg] to Henry Imbert-Terry  W.L. BRAGG/65B/210  5 March 1940

Contents:
½p, typescript
Had enjoyable and profitable weekend with [A.H.] Atkins. Is keen to give the fullest support to any scheme Imbert-Terry arranges. Felt it was premature to invite [Harold] Hemming and Atkins to the first meeting of the Physics Committee on 7 March; comments on this. Would like to accept Imbert-Terry's invitation to visit Larkhill.

A.H.Atkins to [Alice] Bragg  W.L. BRAGG/65B/211  5 March 1940

Contents:
Larkhill 2½pp, MS
Thanks Mrs Bragg for her hospitality. Comments on his visit. Pressure is being exerted to get "H" a job at Larkhill. Douglas Hay visited Larkhill and reported that sound ranging is a "dud".

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/212  5 March 1940

Contents:
Larkhill 2pp, MS
[Imbert-Terry] is due back tomorrow with the new charter for the School of Survey R.A. Understands the survey will go to a new committee, A.5; comments on this. May prove difficult to argue that Hodge should have no voice in the council chamber; comments on this. Sound ranging must remain largely in Bragg's hands. Idea of starting the Research Dept. at Cambridge has been well received by [Imbert-Terry] and Col.Penrose.
The film man visited Larkhill; he has ideas about directional microphones. Asks if Bragg thinks this should be looked into.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/213  5 March 1940

Contents:
Carlton Club, London 2pp, MS
Thanks Bragg for letter. Had long talk with [A.H.] Atkins about his visit to Bragg. Agrees with Bragg's suggestions in principle. Told Atkins to stress to Penrose that they have a "heaven-sent opportunity" to break away from the R.E.& S.Board. Latest development rules out any question of asking [Harold] Hemming and Atkins to attend the Advisory Committee; comments on this. [S.C.] Browning visited Larkhill and confirmed their views.

R.H.Angus to [Lawrence] Bragg  W.L. BRAGG/65B/214  7 March 1940

Contents:
Cambridge ½p, typescript
Mr Landon thinks he can be let off a certain amount of teaching in the summer. Comments on the amount of time he should be able to devote to experimental work on sound ranging. Will be pleased to help Bragg. If he is allowed to work in Cambridge and to do his University and College work, shall not want any pay but hopes his expenses would be repaid.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/215  8 March 1940

Contents:
Larkhill 1/3p, typescript
Thanks Bragg for letter. Has declined invitation to attend meeting of the Advisory Council of Scientific Research & Technical Development.
War Office has approved the establishment of Larkhill as a School of Survey. Thinks matters are moving in the right direction with regard to their relations with Bragg and research.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/216  8 March 1940

Contents:
Larkhill 1p, MS
Next week Larkhill should be the School of Survey R.A. and completely under the control of the R.A. Experimental work will be controlled by A2 or A5. Will start field trials with the wireless after Easter.
Would like an old 1918 recorder, modified by Bragg to take new film, to test against the Mark II set. After Easter, hopes they will be able to start testing under something approaching war conditions. Has told [Imbert-Terry] it is absolutely necessary for them to ensure Bragg's involvement in their work.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/217  9 March 1940

Contents:
2/3p, typescript
Has talked to [E.T.] Paris and to [A.P.] Sayer. Has begged Paris to talk to Atkins. Sayer is willing to hand over the sound ranging but thinks the D.of A. has said he does not want it. Greatly enjoyed Atkins' visit. Will give any help he can with sound ranging; comments on this.
Is enclosing note he has had from [R.H.] Angus. If experimental work can be done at Cambridge as a stop-gap plan, he can arrange it for Atkins and [Harold] Hemming.

[Lawrence Bragg] to R.H.Angus  W.L. BRAGG/65B/218  11 March 1940

Contents:
¼p, typescript
Thanks Angus for letter. Future of sound ranging is undecided. Important to know Angus will be able to give some time to sound ranging work if they can arrange it.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/219  12 March 1940

Contents:
Larkhill 3¼pp, MS
Thanks Bragg for letter. Will see [E.T.] Paris on Saturday. He and [Imbert-Terry] wonder whether [H.J.] Gough's department might take the place of the R.E.& S.Board. Comments on possible membership of the Committee. Appreciates Bragg's offer of help. He and [Imbert-Terry] feel it is important that Bragg should be officially recognised as the real authority on sound ranging problems. Would like Bragg to accompany him when he visits the 2nd Survey. Should be about to "short circuit" a lot of red tape when the Committee is functioning. Will let Bragg know results of tests on the C.I.C.Mark I. The suggested arrangement with [R.H.] Angus would be perfect.

R.H.Angus to [Lawrence] Bragg  W.L. BRAGG/65B/220  16 March 1940

Contents:
Cambridge 12/3pp, typescript
Is sending more films which show that transmission of the record over about a third of a mile of D.8 cable is the same as transmission over a short piece of copper. Discusses the films. Would be interesting to try similar tests with short pieces of copper cable and D.8 in longer lengths, with a Mark I instrument which has the transformer; comments on this. Might try effect of changing the galvanometer field strength on the damping.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/221  18 March 1940

Contents:
½p, typescript
Is keen to hear result of Atkins' talk with [E.T.] Paris and what happens to the general supervision of the G.S.R. work. Gives his holiday address. Would be delighted to go [to the 2nd Survey] with Atkins.

[Lawrence Bragg] to R.H.Angus  W.L. BRAGG/65B/222  18 March 1940

Contents:
¼p, typescript
Will discuss Angus's letter when he returns from holiday. Should know the position regarding sound ranging developments more clearly in a few weeks. [A.H.] Atkins was grateful for Angus's offer to do some work.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/223  18 March 1940

Contents:
Liverpool 1½pp, typescript
[E.T.]Paris agrees it is essential to form Committee along the lines he, Atkins, suggested. Comments on this and on conversation with Major Lickman about the Committee. Suggests Bragg visit Larkhill again. He and Hinchcliffe would like Bragg to see some radio experiments. Is planning to lay out a new curved base to do work at 7/10,000 yards range and get a direct comparison with results obtained on other bases.
Asks if he might borrow the old apparatus. Would like Bragg to visit France with him. If committee should be impossible to arrange, wonders whether they might make Bragg an official consultant on sound ranging problems; comments on this.

F.E.Smith to [Lawrence] Bragg  W.L. BRAGG/65B/224  20 March 1940

Contents:
Ministry of Supply, London ¼p, typescript
Last October, Bragg wrote to [R.S.] Whipple to say he had been asked to send in a report on sound ranging. Whipple is away and he does not seem to have seen the report. Asks if Bragg has a copy he could have.

[Lawrence] Bragg to [F.E.] Smith  W.L. BRAGG/65B/225  20 March 1940

Contents:
Beaulieu 4pp, MS draft
Visit to Smith was concerned with possible consequences of selling inefficient, expensive apparatus to the Turkish Government and not with the provision of apparatus to the British Army. Comments on reports on the Mark I apparatus which make the same criticisms. [A.P.] Sayer seems inclined to consider his (Bragg's) suggestion that a number of 1918 model sets should be put in hand as a standby; comments on this.
Discusses the negotiations with the Turkish Government about the sale of sound ranging sets and the proposal to sell the Mark II set rather than the Mark I set. An independent expert should look at the apparatus before they have a discussion with representatives of the R.E.& Signals Board.

P.J.Beckett to [Lawrence] Bragg  W.L. BRAGG/65B/226  24 March 1940

Contents:
1st Survey Regt.R.A. ½p, typed & MS
Is enclosing copy of letter about a new instrument which, if its claims are substantiated, should help solve the problem of identification during battle and should shorten ranging time.
With letter to the Headquarters, Royal Artillery I Corps, 15 March 1940 about French sound ranging equipment; 2pp, typescript; W.L. BRAGG/65B/227.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/228  1 April 1940

Contents:
Larkhill 1¾pp, MS
Unwise to wholeheartedly condemn the Mark I apparatus as modified by the C.I.Co. Enquiry should limit itself to lack of wisdom in withholding information that preliminary trials had indicated that the Mark I was weak in design and that a Mark II was in production using the same basic principles. Nothing confidential about Mark II once the Turks are in possession of Mark I; discusses this. The credit of the British instrument industry is involved; comments on this. Difficult for Advisory Council to take action concerning Survey reorganisation problems. Comments on increasing power of the D.S.R.

A.H. [Atkins] to [Lawrence Bragg]  W.L. BRAGG/65B/229  [ca. April 1940]

Contents:
London 3½pp, MS
Notes on the Mark I recorder and on improvements needed.

Ministry of Supply (F.E.Smith) to W.L. BRAGG  W.L. BRAGG/65B/230  5 April 1940

Contents:
London ¼p, typescript
Is enclosing draft minutes of meeting held on 4 April.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/231  6 April 1940

Contents:
Larkhill 1p, MS
Discusses new commandant at Larkhill, [H.] Green[e]. All will be well if Bragg is recognised as their consultant on sound ranging problems.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/232  8 April 1940

Contents:
¾p, MS
Report was sent privately to Jones; comments on this. Possible that report has not yet got through all the official channels. Feels that [?Hodgkinson] and the Commandant are hostile towards him and Bragg.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/233  8 April 1940

Contents:
1p, MS
Methods of teaching are opposed to his best judgement. Comments on this and on his inability to change matters. Feels there is so much good work he could be doing in Liverpool that he should take steps to get his release [from Larkhill].

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/234  11 April 1940

Contents:
2/3p, MS
Is enclosing [Imbert-Terry's] letter. Will soon be asked to sign [?Hodgkinson's] reports. Does not intend to do this, but reports may be modified to meet some of his objections. Comments on his position.
With enclosure
Henry Imbert-Terry to A.H.Atkins

Strete Ralegh  W.L. BRAGG/65B/235  10 April 1940

Contents:
1¼pp, typescript
Is very disquieted about sound ranging. No-one in any position in the War Office who knows about gun location and no-one in France. Survey people are nervous about the instrument. Incredible that the report should not have reached the War Office; comments on this. Discusses Survey organisation and the way in which it should be changed. Bragg should see the report and show it confidentially to C. Convinced their suggestions will be distasteful to the "powers that be". Only chance is for someone like C. to insist on proper practical organisation.

Ministry of Supply (F.E.Smith) to W.L. BRAGG  W.L. BRAGG/65B/236  11 April 1940

Contents:
Westminster ¼p, typescript
Has arranged for minutes incorporating Bragg's amendments to be circulated. Would like to visit Cambridge but is too busy at present.

K.D.Murray to W.L. BRAGG  W.L. BRAGG/65B/237  15 April 1940

Contents:
Cambridge University O.T.C. 2/3p, typed
Asks for something in writing to show that they have handed over the old sound ranging instrument to Bragg for experimental purposes; comments on this.

Ministry of Supply (F.E.Smith) to W.L. BRAGG  W.L. BRAGG/65B/238  15 April 1940

Contents:
Westminster ¼p, typescript
Is enclosing minutes of meeting held on 4 April to discuss sound ranging With minutes: 11/3pp, duplicated; W.L. BRAGG/65B/239.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/240  16 April [1940]

Contents:
Larkhill 2pp, MS
Shall soon know what arrangements are to be made in future. Told H. Greene of his general ideas and of his intention to make the best of the Mark I and II recorders. Was unable to see Paterson when he visited Larkhill. Greene seems friendly and sincere in his views. They are to have an experimental section in conjunction with A.D.E.E.; comments on this. Will give the old apparatus a good test; discusses the apparatus. Does not think they can do anything about [Imbert-Terry' scheme. Thinks Paterson and Lickman are key men. Carrie should arrive from Canada next week.

E.T.Paris to [Lawrence] Bragg  W.L. BRAGG/65B/241  16 April 1940

Contents:
Ministry of Supply 2pp, MS
Not likely to be much change in the situation unless War Office reports that the sound ranging equipment is unsatisfactory. Should try to persuade Atkins to stay on; comments on this.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/242  17 [April 1940]

Contents:
Larkhill 2/3p, MS
Greene has handed back report and said it was very fair. Believes Greene knows they have been trying to do a good job. Presumes [Hodgkinson] will continue to be involved in their work.

A.V.Hill to W.L. BRAGG  W.L. BRAGG/65B/243  19 April 1940

Contents:
Washington 2pp, typescript
Visited Bell Laboratories and saw a Rapid Record Oscillograph.
Discusses the oscillograph, its advantages and uses. Also heard about a "Thallous Sulphide Photo-cell"; comments on this. Is enclosing short strip of record.
With strip: W.L. BRAGG/65B/244.

[W.L. BRAGG] to K.D.Murray, Cambridge University OTC  W.L. BRAGG/65B/245  22 April 1940

Contents:
1/3p, typescript
Is enclosing extract from minutes of meeting on sound ranging held on 4 April. As a result of this asked Murray to lend equipment for trials; comments on this. Asks if letter could serve a receipt for temporary loan of the equipment.
With extract from minutes: ¼p, typescript; W.L. BRAGG/65B/246.

A.H.Atkins to [Alice] Bragg  W.L. BRAGG/65B/247  23 April 1940

Contents:
Larkhill 1p, MS
Acknowledges letter. Comments on the lectures he has to give to Army officers and on form-filling.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/248  23 April 1940

Contents:
Larkhill 1¼pp, MS
[Hodgkinson] is going to France; comments on this. Regular Survey Officers have been trained in an unsound manner; comments on this.
Carrie has an idea for a plotting board much simpler than the Mark II and would like to meet Bragg. Has been asked to apply for job as Senior Mechanical & Electrical Assistant at the Air Ministry but when he is a civilian again, must return to Liverpool. Will get Carrie to send sketch and arrange for him to come to London.

[Lawrence Bragg] to Lieut-Col.C.I.Beckett, 1st Survey Regt BEF  W.L. BRAGG/65B/249  25 April 1940

Contents:
¼p, typescript
Thanks Beckett for note about the instrument. Will be delighted to joint the party visiting Mailly-le-Camp.

K.D.Murray to W.L. BRAGG  W.L. BRAGG/65B/250  25 April 1940

Contents:
Cambridge University OTC ½p, typed
Acknowledges letter. Is not objecting to handing over the sound ranging instrument, just wanted some authority on record. Possible that Bragg will be able to return the instrument after trials.

Henry Imbert-Terry to [Lawrence] Bragg  W.L. BRAGG/65B/251  27 April 1940

Contents:
Strete Ralegh 2pp, MS
Agrees only thing to do is to go slow. Atkins is the practical sound ranging authority; only thing that worries him is [Hodgkinson's] personal hostility; comments on this. When opportunity offers, should act as suggested. Regrets not working with Bragg. Has heard nothing from War Office and is still attached nominally to the School.

Ministry of Supply (H.Paterson) to W.L. BRAGG  W.L. BRAGG/65B/252  29 April 1940

Contents:
London ½p, typescript
Asks Bragg to complete three copies of enclosed form which are needed to get Exist Permit for Bragg's visit to France.

[Lawrence Bragg] to H.Paterson, Ministry of Supply  W.L. BRAGG/65B/253  30 April 1940

Contents:
¼p, typescript
Is enclosing applications for exit permits and passport. Will be at the Royal Institution from Thursday 2nd May until the Sunday. Thanks Paterson for arranging visit to France.

[Lawrence Bragg] to H.Paterson, Ministry of Supply  W.L. BRAGG/65B/254  10 May 1940

Contents:
1/3p, typescript
Is sending draft of notes on apparatus they inspected at St Cloud; comments on this. Should like to come to Salisbury Plain on 14th; comments on this. Thanks Paterson for arranging visit to France. With notes on Telemetre optico-acoustique; 2½pp, typed & MS; W.L. BRAGG/65B/255

[Lawrence Bragg] to H.Paterson  W.L. BRAGG/65B/256  10 May 1940

Contents:
1/3p, typescript
Is enclosing notes on visit to sound ranging sections, with records and map. Asks Paterson to return records and map to Capt.Pichot. Atkins has examples of records given by the quartz oscillograph and method of plotting by secants.
With notes on the French system of gun sound ranging: 22/3pp, typed & MS; W.L. BRAGG/65B/257.

Royal Artillery  W.L. BRAGG/65B/258  13 May 1940

Contents:
2/3p, duplicated
Agenda for meeting on sound ranging equipment to be held at the R.A. Survey School on 14th May.
With appendices giving a) points raised by Units in their reports
b) points arising from visit to France. 2¼pp, duplicated; W.L. BRAGG/65B/259

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/65B/260  16 May 1940

Contents:
½p, typescript
Hemming wants to get some good material on which to print the scales for the flash-spotting plotting boards; discusses the problem, particularly difficulties arising from expansion of damp paper. Hopes Philpot will be able to visit Larkhill to see the problem for himself.

A.J.Philpot to W.L. BRAGG  W.L. BRAGG/65B/261  17 May 1940

Contents:
B.S.I.R.A., London 2/3p, typescript
Discusses question of expansion of papers as a result of dampness and recommends a paper made by Rawstone Press Ltd.

[Lawrence Bragg] to Col.[H.] Greene  W.L. BRAGG/65B/262  18 May 1940

Contents:
¾p, typescript
Has been arranging with the Cambridge Instrument Co. for conditioning of the 1918 sound ranging apparatus for test at Larkhill. Simple type of test and balancing board must be devised. Lists information he wants Is enclosing sample of strip which was run through in order to check time marking of the new valve driven tuning fork and time wheel against that of the 1918 apparatus. Comments on results. [H. Hemming asked him about paper strips for marking out scale. Asks Greene to pass on to Hemming the enclosed letter from Philpot; comments on this.

Royal Engineers & Signals Board (Oliver Sherlock) to W.L. BRAGG  W.L. BRAGG/65B/264  18 May 1940

Contents:
London ¼p, typescript
Provisional arrangements have been agreed for the Cambridge Instrument Co. to modify the 1918 Sound Ranging Recorder. Asks for estimate of cost.

D.H.Black to W.L. BRAGG  W.L. BRAGG/65B/265  21 May 1940

Contents:
Air Defence Experimental Establishment, Somerford
2pp, typescript
No definite arrangements have been made to carry out comparative tests of the standard Mark II G.S.R.Recorder and a simplified version of the same. Discusses possible use of a phonic wheel driven from a tuning fork, in place of the chronograph, and tests which might be made.
Discusses proposal to re-design magnet and proposal for replacing the transformers with condensers. Will ask the Cambridge Instrument Co. to carry out the necessary work for the comparison tests and to do what work Bragg wants done on the 1918 equipment; comments on this. Capt. Hodgkinson had an enjoyable time in France and found that most of the equipment was working fairly well. Christchurch is to be headquarters of G.S.R. section, with an outstation at Larkhill.

[A.H.Atkins] to [Lawrence] Bragg  W.L. BRAGG/65B/266  22 May 1940

Contents:
Larkhill 1½pp, MS
Gives details of resistance of lines from H.Q. to microphones. Strip showing time markings is very interesting. Will look forward to receiving the 1918 set. Asks if Bragg uses any particular photographic method. Thinks the transformers have a lot to do with the lack of character.

Ministry of Supply (H.Paterson) to [Lawrence] Bragg  W.L. BRAGG/65B/267  22 May 1940

Contents:
London ¾p, typescript & MS
Acknowledges letter with enclosures on the continuous running recorder. Bragg was in order to send such things direct to him; comments on this. Has not heard officially about Bragg's allowances. Is enclosing minutes of the Larkhill meeting and a copy of the Sound Ranging Agenda. Asks Bragg to acknowledge receipt of the enclosures.
With a) Minutes of meeting held at R.A. School of Survey, Larkhill, on 14 May 1940, to discuss survey, flash spotting, sound ranging equipment; 6pp, typescript; W.L. BRAGG/65B/268.
b) Agenda and appendices for meeting of 14 May; 3¼pp, duplic.; W.L. BRAGG/65B/269

[Lawrence Bragg] to D.H.Black, Air Defence Experimental Est.  W.L. BRAGG/65B/270  23 May 1940

Contents:
2¼pp, typescript
Acknowledges letter. Paterson authorised him to make arrangements with the Cambridge Instrument Co. to modify the 1918 recorder. Mason is sending statement. Discusses time marker, new magnet design, and transformers in apparatus. Comments on development contract. Has asked A.V.Hill to get samples of duralumin wire. Is sending sample of film taken to check 1918 time marker against new model; comments on this.
Comments on visit to France.

[Lawrence Bragg] to O.Sherlock, R.E.& Signals Board  W.L. BRAGG/65B/271  23 May 1940

Contents:
¼p, typescript
Will send estimate of expenditure involved in modifying the 1918 recorder.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/65B/272  24 May 1940

Contents:
1p, typescript
Asks Atkins for his views about what they propose to do. Comments on bridge circuit, balancing board, running of micro-currents, batteries and developer.

[Lawrence Bragg] to H.Paterson  W.L. BRAGG/65B/273  24 May 1940

Contents:
1¼pp, typescript
Is enclosing copy of letter from Major Sherlock. Mason is making an estimate of cost of modifying the 1918 apparatus; comments on this. Is enclosing copy of letter from [D.H.] Black; seems to be some overlapping.
Hopes Paterson will give him a free hand to rig up something which fits the base at Larkhill. Comments on experiments he and Mason are making with styles writing on celluloid strip. Is enclosing copy of letter from [A.V.] Hill. Has asked Hill for samples of wire.
With copy of letter from D.H.Black, 21 May 1940 (W.L. BRAGG/65B/265): W.L. BRAGG/65B/274.

R.E.& Signals Board (Oliver Sherlock) to W.L. BRAGG  W.L. BRAGG/65B/275  24 May 1940

Contents:
London ¼p, typescript
Asks Bragg to arrange for estimate to show details of modifications as well as cost; comments on this.

[Lawrence Bragg] to [H.] Paterson  W.L. BRAGG/65B/276  27 May 1940

Contents:
1p, typescript
Is enclosing copy of letter from Sherlock and reply from the Cambridge Instrument Co. Hopes Paterson agrees that latter is what is needed; comments on this. Would like to see Paterson on 30 May. It has proved possible to record signals from hot wire microphone on celluloid strip. Wants to discuss proposal about investigations with telemeter and points raised at Salisbury Plain meeting. Is enclosing letter from A.D.E.E. about phonic wheel; would like to discuss this.
With a) copy of letter from Cambridge Instrument Co., 25 May 1940, about modifications to 1918 G.S.R. apparatus and estimated cost: ¾p, typed; W.L. BRAGG/65B/277
b) Extract from A.D.E.E. letter about phonic wheel: 1/3p, typed; W.L. BRAGG/65B/278

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/65B/279  27 May 1940

Contents:
Larkhill 12/3pp, MS
Circuit Bragg suggests should be all right. Comments on proposed bridge circuit. They want microcurrent switched on when OP switch is closed. Have sufficient batteries. Want to take records of same gun at same moment with the 1918 recorder and the Mark II; discusses this, listing things to be tested for. Discusses developer. Would like to come and collect apparatus.

D.H.Black to W.L. BRAGG  W.L. BRAGG/65B/280  28 May 1940

Contents:
A.D.E.E., Somerford 1¼pp, typescript
Acknowledges letter. Received letter from Cambridge Instrument Co. If users wish to retain high and low speeds of Mark II equipment, present valve driven synchronous motor should be retained; comments on this.
Cambridge Instrument Co. do not think it advisable to change magnet design. Gives details of microphone current and resistance. Services have asked that provision be made for maximum line resistance of 1600 ohms; comments on this. Major Sherlock should have given Bragg all necessary information about the development contract. Would like samples of duralumin wire. Hodgkinson has asked how duralumin wire and terminals can be connected; understands it is almost impossible to solder the wire.

S.C.Curran to W.L. BRAGG  W.L. BRAGG/65B/281  30 May 1940

Contents:
Air Ministry Research Dept., Exeter 2pp, MS
Understands Bragg is working on problem of gun laying by P.E. He has been working on P.E. problems but would like to move. Asks if it would be possible for him to join Bragg's group; comments on this.

[Lawrence Bragg] to S.C.Curran  W.L. BRAGG/65B/282  31 May 1940

Contents:
1/3p, typescript
Mentioned Curran to Major Paterson who is specially concerned with gun location. Would be ideal if Curran would collaborate with him in the development of the apparatus; comments on this.

A.P.Sayer to W.L. BRAGG  W.L. BRAGG/65B/283  31 May 1940

Contents:
R.E.& Signals Board, London 1p, typed
As Mark II recorder must operate on two speeds, the chronograph must be retained. Use on phonic wheel instead of chronograph should still be considered in new forms of G.S.R. equipment; comments on this. Thinks use of condensers in place of transformers might be considered in conjunction with new designs rather than modification of Mark II. The problem with magnet has been overcome; asks if Bragg thinks proposed change might be dropped.

Sound ranging: correspondence and reports  W.L. BRAGG/66A  1940-1941

H.Paterson to Lawrence Bragg  W.L. BRAGG/66A/1  2 June 1940

Contents:
Ministry of Supply ¾ page, typescript
Acknowledges letter. Is to meet Dr Johnstone. The projector of the celluloid recorder is delightfully sinple but must meet two requirements; discusses this. Will telephone to arrange day to visit Bragg. Has passed Mason's letter on to the R.E.& S. Board.

[Lawrence Bragg] to A.Sayer  W.L. BRAGG/66A/2  3 June 1940

Contents:
2/3 page, typescript
Agrees with Sayer's views about the Mark II recorder. Undesirable to consider radical changes in the Mark II at present. Comments on this and on steps being taken to provide a simple type of one speed apparatus. Agrees that the change in the magnet can be dropped; comments on this.

S.C.Curran to Lawrence Bragg  W.L. BRAGG/66A/3  3 June 1940

Contents:
Exeter ½ page, MS
Thanks Bragg for help. Will await developments unless Bragg wants him to take any action.

[Lawrence Bragg] to [A.H.] Atkins  W.L. BRAGG/66A/4  4 June 1940

Contents:
1 page, typescript
Apparatus should be ready by the end of the week. Paterson is to visit on Saturday. Wants to show Paterson the 1918 apparatus and a simple type of continuously running recorder. Discusses recorder. The 1918 apparatus has no automatic developer; comments on this. Not worth putting on a developer for the first trials. Has asked Paterson if he might spend a few days at Salisbury Plain and have a long talk with Atkins and with Hemming.

[Lawrence Bragg] to H.Paterson  W.L. BRAGG/66A/5  5 June 1940

Contents:
½ page, typescript
Delighted Paterson is coming on Saturday. Wants to discuss whether he can be of help in a rapid investigation of the telemeter nethod. Discusses possibility of [S.C.] Curran coming to his laboratory to work on the problem. Has celluloid strip method so sensitive that the microphone gives more sensitivity than they need with one valve; hopes to get it to work without any valves.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/6  7 June 1940

Contents:
Larkhill 1 page, MS
Should be able to collect apparatus in a week's time. Telemeter apparatus should be most interesting and might be adapted for use with the radio link. Sound Ranging must be made absolutely mobile.
Will fit the 1918 apparatus into a dark room for preliminary tests.
Hopes Bragg will come and stay for a few days. He is still doing tests on accuracy.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/7  9 June 1940

Contents:
Larkhill ¼ page, MS
H.[Greene] has agreed that he should come to Cambridge to pick up apparatus. Asks Bragg to let him know which day is most suitable.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/8  10 June 1940

Contents:
1/3 page, typescript
Hopes apparatus will be ready by 17th. Suggests Atkins come by car on 16th then they could return to Larkhill together; comments on this.

[Lawrence Bragg] to [A.H.] Atkins  W.L. BRAGG/66A/9  12 June 1940

Contents:
2 pages, typescript
If apparatus is ready for collection on 17th, will send Atkins a wire. Comments on his own proposed visit to Larkhill. Asks how the 1918 apparatus compares with the new one in portability, ease of maintenance and freedom from breakdown. Asks for information concerning the balance bridge, high resistance lines, damping, automatic developers, working at two speeds, second markings, automatic plotter, French secant plotter, surveying of microphone positions. Hopes to have sample recorder working on celluloid. Hopes Paterson will be there so they can discuss trials of the telemeter apparatus. If they can suggest certain simplifications or alterations in the way men are trained to use sound ranging, is sure Paterson will give the ideas full consideration. Thinks Paterson sympathises with their feeling that the whole business has been made much too complicated.

Royal Engineers & Signals Board (Oliver Sherlock) to Lawrence Bragg  W.L. BRAGG/66A/10  13 June 1940

Contents:
London ¼ page, typescript
Thanks Bragg for information which enabled them to place official order with the Cambridge Instrument Co.Ltd.

[Lawrence Bragg] to H.Paterson  W.L. BRAGG/66A/11  14 June 1940

Contents:
2½ pages, typescript & MS
Had intersting talk with Dykes about his experiences in France.
Outlines Dykes' sound ranging experiences on the Saar front and at Calais, commenting on factors determining the time taken to get into action and discussing the instruments used.
With copies: W.L. BRAGG/66A/12 & W.L. BRAGG/66A/13.

[Lawrence] Bragg to [H.] Green[e]  W.L. BRAGG/66A/14  15 June 1940

Contents:
½ page, typescript
Atkins is coming to Cambridge on 17th June to collect apparatus. Should like to return to Larkhill with Atkins. Had interesting talk with Paul Dykes about Dykes' experiences in France.

D.L.Drew to [Lawrence] Bragg  W.L. BRAGG/66A/15  18 June 1940

Contents:
Oxford 2/3 page, typescript
Does not know if Bragg is advising the War Office on sound ranging or how the business has progressed beyond the 1919 point. Comments on one failure in the 1914-18 War: owing to the short bases the long range cannon were not accurately located. Comments on the protection of valuable buildings by an overhead net of high tension wires. He is attempting to join the Army; comments on this.

G.T.McCaw to [Lawrence] Bragg  W.L. BRAGG/66A/16  24 June 1940

Contents:
Surbiton 1 page, MS
Experience in Flanders and France made him think sound ranging and field survey would be of no use in the present war. Is no longer so sure. Comments on discovery of a "big Bertha" emplacement at Calais. Concealment and protection may make it difficult to destroy guns. Detection can be done by sound ranging bases in England; comments on this.

[Lawrence Bragg] to [D.L.] Drew  W.L. BRAGG/66A/17  25 June 1940

Contents:
1/3 page, typescript
Acknowledges letter. Robinson is billeted with them. Has been doing a lot of work on sound ranging, which has become fossilised since the last war; comments on this. Will see that Drew's suggestion about sound ranging on the coast is considered. Hopes Drew has a job he likes.

[Lawrence Bragg] to G.T. McCaw  W.L. BRAGG/66A/18  27 June 1940

Contents:
¼ page, typescript
Thanks McCaw for suggestion. Should be possible to locate across the Channel.

A.H. Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/19  27 June 1940

Contents:
Larkhill 12/3 pages, MS
Has been considering problems of very long sound ranging locating and has asked to have a talk with Bragg. Outlines some of the problems. Assessment of Meteor might be difficult. Is afraid Paterson might rope in Hodg[kinson]. If so, he will leave and return to the problem of the supply of high MgO for metallic magnesium. His wife and Elizabeth expect to sail for Canada on 3rd July.

[Lawrence Bragg] to [A.H.] Atkins  W.L. BRAGG/66A/20  28 June 1940

Contents:
1/3 page, typescript
Asks Atkins to let him know when he has given the sound ranging apparatus a trial. Asks if anything further has been done about the celluloid recorder; comments on this.

[Lawrence Bragg] to G.M. Carrie  W.L. BRAGG/66A/21  28 June 1940

Contents:
1/3 page, typescript
Very interested in Carrie's idea but is not sure if it would be practical politics to develop it. Plotting is not one of the sound ranging problems. Should try it out with minimum number of strings to see whether the accuracy will be sufficient.

D.L.Drew to [Lawrence] Bragg  W.L. BRAGG/66A/22  29 June 1940

Contents:
Oxford 1¼ pages, typescript
Is enclosing notes on sea batteries and letter he had from the admiralty about his idea. Comments on his idea. Comments on his wish to take on some war servide. Younger generation would be better off after a victorious war; comments on this.
With letter from Admiralty, 27 June 1940, acknowledging letter: [?] page, typescript, W.L. BRAGG/66A/23.

[?]R.Pye to Lawrence Bragg  W.L. BRAGG/66A/24  29 June 1940

Contents:
Ministry of Aircraft Production, London
[?] page, typescript
Cannot spare Curran at present to help with sound ranging work.

[Lawrence Bragg] to D.L.Drew  W.L. BRAGG/66A/25  July 1940

Contents:
¼ page, typescript
Note on floating batteries is very interesting. Does not know to what extent the Admiralty has already envisaged such a procedure [?] will bring the matter up.

[?] D.Ellis to Lawrence Bragg  W.L. BRAGG/66A/26  July 1940

Contents:
Kings College, London ½ page, typescript
Discusses the ink writer made by Clifton Instruments Ltd. which he no longer considers suitable for sound ranging experiments. The company may have improvements and Bragg might make enquiries. Will write to Paterson about it.

Ministry of Supply (C.T.D.Lindsay) to Lawrence Bragg  W.L. BRAGG/66A/27  July 1940

Contents:
¼ page, duplicated & MS
Is enclosing record of discussion held on 4 July on location of long range hostile artillery on the French coast by gun sound ranging.
With memorandum; 2¼ pages, duplicated; W.L. BRAGG/66A/28

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/29  July 1940

Contents:
Larkhill ½ page, typescript
Is sending box of grids. Proposes to let Bragg have one complete microphone screen. They will start sensitivity trials as soon as osteor conditions are better. If containers are in vertical position, first kick tends to be sharper. May come to Cambridge to collect new recorder.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/30  Aug.1940

Contents:
½ page, typescript
Is returning book on ostroid graph; comments on book. Would like to know Atkins results of new experimental base.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/31  Aug. 1940

Contents:
Larkhill 2 pages, MS
They need to keep in touch with Bragg's work. Sound ranging can function at 30 miles or more. Asks if Bragg thinks it is worth flying on a 100 mile base; comments on this. [Hodgkinson] is too interested in their immediate problems; comments on this. Bragg's establishment will be a great help as they are not supposed to do experimental work but are to train men in practical work.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/32  Aug.1940

Contents:
Larkhill 2 pages, MS
Bragg may be visited by Capt. Brown and Lt.Col. Robinson; comments on them. Would like to have old apparatus from C.I.Co. fitted with [?] tuning fork. Comments on problems of wind; base requires a S.E.wand. If units sent to Near East, should take modified old apparatus. Comments on this.

Ministry of Supply (C.T.D.Lindsay) to Lawrence Bragg  W.L. BRAGG/66A/33  Aug. 1940

Contents:
London ½ page, typescript
Pleased Bragg will visit base with them. Gives details of arrangements.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/34  Aug. 1940

Contents:
Larkhill 1¾ pages, MS
Pleased for Bragg to do experiments they cannot do at Larkhill. Need to tackle question of characteristics. Thinks Bridge apparatus is lighter but has not been able to get down to a satisfactory series. Asks if Bragg could visit unofficially; comments on this.

[[?] N.da C.Andrade] to Lawrence Bragg  W.L. BRAGG/66A/35  Aug. 1940

Contents:
Ministry of Supply, London ½ page, typescript
Asks Bragg's opinion of enclosed sound ranging proposal submitted by Fletcher Moulton.

[Lawrence Bragg] to Major [R.B.] Eastwood  W.L. BRAGG/66A/36  Aug. 1940

Contents:
½ page, typescript
Thanks Eastwood for hospitality. Appreciated seeing working of the battery. Was interested in discussions with Dykes on making use of [?]ords from the three sections; comments on this. Is getting other information for Blaney about calculation of wind corrections.

[Lawrence Bragg] to C.T.D.Lindsay, Ministry of Supply  W.L. BRAGG/66A/37  Aug. 1940

Contents:
2 pages, typescript
[?] and Dykes went over records from other bases and could get good copies of locations from one pair of films. Would like to have another chance to go over such records with Dykes; comments on this.

[Lawrence Bragg] to E.N. da C.Andrade  W.L. BRAGG/66A/38  August 1940

Contents:
2/3 page, typescript
Thanks Andrade for sending copy of Fletcher Moulton's sound ranging proposal. Effectively the proposal has already been adopted, though in a slightly different form: discusses this. Question of picking up single shots has also been gone into; comments on this.

Ministry of Supply (C.T.D.Lindsay) to Lawrence Bragg  W.L. BRAGG/66A/39  23 Aug. 1940

Contents:
London 2/3 page, typescript
Acknowledges letter. Would be pleased if Bragg would visit Eastwood again; comments on this. Is enclosing copy of letter to Angus about bangs from Shoebury and the new A.P. apparatus.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/40  24 Aug. 1940

Contents:
1/3 page, typescript
Is keen to visit Atkins. Had interesting time on the south coast and wants to go again to discuss computation of results. Wants to discuss the North End results with Atkins.

R.B.Eastwood to Lawrence Bragg  W.L. BRAGG/66A/41  27 Aug. 1940

Contents:
1st S.R.Battery R.A., Eythorne
2/3 page, typescript
Grateful to Bragg for his help. Hopes Bragg will visit them again soon. Have not obtained any gun locations. Got records on 24th when gun was shelling Dover; is enclosing copy. On 25th recorded explosion near Le Touquet; comments on this. Continually record the guns firing at Shoeburyness.

[Lawrence Bragg] to [H.] Paterson  W.L. BRAGG/66A/42  28 Aug.1940

Contents:
¼ page, typescript
Asks if he might visit Atkins informally to discuss simplified sound ranging apparatus and other matters.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/43  28 Aug. 1940

Contents:
2/3 page, typescript & MS
Is anxious to visit Atkins. Met General McNaughton and heard about scheme he is getting Hemming to try out. Wants to talk about long range work. Comments on delays because have not been able to erect Post Office lines. Asks if he might visit on 9th.

Paul Dykes to [Lawrence] Bragg  W.L. BRAGG/66A/44  28 Aug. 1940

Contents:
Eythorne 2 pages, MS
Discusses film he is enclosing which shows two very similar breaks on each string. Comments on records of explosion at Le Touquet. Gives data enabling Bragg to plot enclosed film.

J.Allenby to [Lawrence Bragg]  W.L. BRAGG/66A/45  29 Aug. 1940

Contents:
[Eythorne] ¼ page, typescript
Enclosure was omitted from Capt Dykes' letter.
With record of explosion: ½ page, duplicated & MS, W.L. BRAGG/66A/46; and record of film, 25 Aug., W.L. BRAGG/66A/47.
With calculations [by WLB]; 2pp., MS; W.L. BRAGG/66A/48.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/49  28 Aug. 1940

Contents:
Liverpool ½ page, typescript
Will be back in Larkhill on Tuesday. Commandant is anxious to see Bragg. Would like advice about designing new apparatus.

[A.H.Atkins] to [Lawrence] Bragg  W.L. BRAGG/66A/50  5 Sept.1940

Contents:
½ page, typescript; telegram
Asks if Bragg will stay on Monday. Asks his time of arrival.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/51  [5 Sept. 1940]

Contents:
Larkhill 1 page, MS
Wired Bragg to say Monday will be alright. Hopes Bragg can stay overnight. Has told Leigh that the visit is ünofficial; comments on this.

[A.H.Atkins]  W.L. BRAGG/66A/52  Sept. [1940]

Contents:
1 page, MS
Programme for Bragg's visit on 9th September.

[Ministry of Supply]  W.L. BRAGG/66A/53  [ca. 13 Sept. 1940]

Contents:
1 page, typescript
Extract from M.I.10 summary of technical reports concerning German long-range guns.

A.H.Atkins to [W.L.] Bragg  W.L. BRAGG/66A/54  15 Sept. 1940

Contents:
Larkhill 2¾ pages, MS
Bragg's visit was a great success. Discusses use of sound ranging in the event of war in the Mediterranean and lower Sudan, commenting on modifications to equipment for use in desert type of warfare and in mobile conditions.

H.M.Clarke to [W.L.] Bragg  W.L. BRAGG/66A/55  29 Sept. 1940

Contents:
Fulbourn ½ page, typescript
Is sending films from A Base and has asked for coordinates of B Base to be sent direct to Bragg. Will talk to Bill Taylor about shell waves. Hopes to be able to avail himself of Bragg's invitation to dine and talk about sound ranging.

S.Lewzey to [W.L.] Bragg  W.L. BRAGG/66A/56  6 Oct. 1940

Contents:
1st Surrey Regt R.A., Sellindge
¼ page, typescript
Is enclosing coordinates of the Base as requested by Major Clarke.
With coordinates: 1 page, typescript; 66A/57.

Cambridge Instrument Co. Ltd (C.C.Mason) to W.L. BRAGG  W.L. BRAGG/66A/58  12 Oct. 1940

Contents:
2/3 page, typescript
Acknowledges letter of 11 October. Regrets that at present they have no suitable vacancy for Mr Hawkins. Asks if anything is happening about the soundranging instrument they made up to record on celluloid. Asks about the galvanometers Bragg obtained for work on the detection of unexploded bombs.

[W.L. BRAGG] to C.C.Mason, Cambridge Instrument Co.  W.L. BRAGG/66A/59  16 Oct. 1940

Contents:
2/3 page, typescript
Celluloid recorder seems to have stuck at the A.D.E.E.; comments on this. Is writing to Chivers about it. The two spot galvanometers are excellent for the job detecting unexploded bombs: comments on experiments with the apparatus.

[W.L. BRAGG] to [R.B.] Eastwood  W.L. BRAGG/66A/60  18 Oct. 1940

Contents:
1¼ page, typescript
Analyses sound ranging films from East Base and Centre Base. Need record on all three bases with a common time marking, which show shell wave and shell burst, in order to work out the trajectory of the guns.

H.M.Clarke to [W.L.] Bragg  W.L. BRAGG/66A/61  22 Oct. 1940

Contents:
Harrold, Bedford ½ page, MS
Is enclosing coordinates from Col. Bellamy; comments on these.
With coordinates for E.Base, Centre Base and W.Base; 1 page, typescript; W.L. BRAGG/62A/62

R.B.Eastwood to W.L. BRAGG  W.L. BRAGG/66A/63  28 Oct. 1940

Contents:
Eythorne ¾ page, typescript
Thanks Bragg for letters and diagrams. Comments on films he is sending. Dover was shelled on Friday; burst and shell waves but not gun waves were recorded. Have not had much chance to test the A.P. unit but it seems that the sensitivity may have to be increased.

[W.L. BRAGG] to R.B.Eastwood  W.L. BRAGG/66A/64  4 Nov. 1940

Contents:
½ page, typescript
Thanks Eastwood for interesting films. They are analysing them to find out what type of trajectory accounts for the relationship; comments on this. His gun locations agreed closely with Eastwood's.

[W.L. BRAGG] to A.H.Atkins  W.L. BRAGG/66A/65  6 Nov. 1940

Contents:
1¼ pages, typescript
Had interesting talk with Mason, Sutton and Tanner. He and Tanner have made notes of points for incorporation into the design of the Mark III apparatus. Discusses plan of campaign for gettin a satisfactory Mark III set designed. Is writing to Lindsay about the matter. Is looking forward to visiting Atkins.

Douglas R.Hartree to [W.L. BRAGG]  W.L. BRAGG/66A/66  8 Nov. 1940

Contents:
Boncath 2½ pages, MS
Has his chief's approval of his proposed collaboration with Bragg on sound ranging work. Could come to Cambridge next week to discuss this. Wants to write up work he has done at Boncath but could start at Cambridge in week of 17th. Asks if Bragg could give him references to sound ranging literature.

[W.L. BRAGG] to D.R.Hartree  W.L. BRAGG/66A/67  15 Nov. 1940

Contents:
½ page, typescript
Paris welcomed idea of Hartree's collaboration. Thinks they should wait for official approval from Gough before starting work. Thinks it should be on a part-time basis until Hartree sees how much work there is to be done.

Ministry of Supply (C.T.D.Lindsay) to W.L. BRAGG  W.L. BRAGG/66A/68  16 Nov. 1940

Contents:
London ½ page, typescript
Cambridge Instrument Co. is to be asked to tender for a pilot model of the Mark III recorder plus development, and for a certain number production; comments on this.

[Ministry of Supply] C.T.D.Lindsay to C.J.B.Clews  W.L. BRAGG/66A/69  16 Nov. 1940

Contents:
1/3 page, typescript; copy
Lists materials which have been sent to the Superintendent of Experiments, Shoeburyness. Enquiries are being made about transport.

H.J.Gough to W.L. BRAGG  W.L. BRAGG/66A/70  19 Nov. 1940

Contents:
Ministry of Supply ½ page, typescript
Agrees that [D.R.] Hartree should do some work on sound ranging, provided that Dr Crow consents. Asks Bragg to let him know if a more formal arrangement is necessary.

[W.L. BRAGG] to R.B.Eastwood  W.L. BRAGG/66A/71  20 Nov. 1940

Contents:
1¼ pages, typescript
Discusses results of work on Eastwood's films. Would like more records of shell-wave, gun-wave and burst. Would like to keep the three pairs of films a little longer as is puzzled by the results.

[W.L. BRAGG] to C.T.D.Lindsay  W.L. BRAGG/66A/72  20 Nov. 1940

Contents:
1/3 page, typescript
Is returning films from A.D.E.E. The way the fast film shows up the character is interesting; comments on this. Combination of high sensitivity and slow rate disguises the nature of the break. Interested to learn that Lindsay is asking Cambridge Instrument Co. to make a pilot model.

[W.L. BRAGG] to D.R.Hartree  W.L. BRAGG/66A/73  22 Nov. 1940

Contents:
½ page, typescript
Gough agrees to Hartree's working on sound ranging provided Crow agrees to it. Clews will be away until 8th December but will leave all his results. Suggests Hartree come to Cambridge to discuss the problems.

A.H.Atkins to W.L. BRAGG  W.L. BRAGG/66A/74  28 Nov. [1940]

Contents:
Larkhill 2/3 page, MS
Nothing definite has been arranged about Durham's successor. They are looking for officers for new Survey Regiments. Asks if Bragg would ask Angus to send a report on Graham Buckley. The Mark III seems to be well under way.

Paul Dykes to [W.L.] Bragg  W.L. BRAGG/66A/75  [Nov/Dec.1940]

Contents:
Eythorne 1¼ pages, MS
Is sending films from West Base; comments on these. Gives meteor information. Is going to try thickening the harp strings.

[W.L. BRAGG] to P.Dykes  W.L. BRAGG/66A/76  3 Dec.1940

Contents:
¼ page, typescript
Thanks Dykes for films. Hartree is going to work on them. He is tackling question of whether you can get bearing off gun accurately from shell-wave and burst alone.

[W.L. BRAGG] to C.T.D.Lindsay  W.L. BRAGG/66A/77  4 Dec. 1940

Contents:
2/3 page, typescript
Hartree is going to compare South Coast films with possible trajectories for the shell. Hartree would like to come to London on 16 December and go to Dover on 17th. Was sorry to miss Lindsay. Hodgkinson came in for a few minutes. Would like to see Mason's plans for the new apparatus. Asks when Lindsay is likely to visit Cambridge again.

C.T.D.Lindsay to W.L. BRAGG  W.L. BRAGG/66A/78  6 Dec.1940

Contents:
Ministry of Supply 2/3 page, typescript
Plans to accompany [D.R.] Hartree to Dover on 17th. Sorry Hodgkinson could not stay overnight with Bragg. Cambridge Instrument Co. has enough information to get on with the first pilot model of the Mark III. Pleased for Bragg to visit the firm Asks Bragg to send any suggestions to the Ministry and not give them direct to the firm. Will be pleased to examine the Mark III with Bragg when it has taken more shape.

[W.L. BRAGG] to C.Mason, Cambridge Instrument Co.  W.L. BRAGG/66A/79  10 Dec. 1940

Contents:
½ page, typescript
Enthusiastic about plans Mason showed him. The computer who interprets the films has the hardest sound ranging job; things should be made as easy as possible for him. Discusses this. Asks if he can try methods of string thickening.

[W.L. BRAGG] to C.T.D.Lindsay  W.L. BRAGG/66A/80  11 Dec. 1940

Contents:
1¾ pages, typescript
Pleased Lindsay might be able to go to Dover with Hartree. He and Hartree have been trying to see whether simplified method of calculation will give sufficiently accurate results; comments on this. A lot can be got out of the films regarding trajectories; if Hartree can do this, would like a scientist to be attached to the Dover bases. Is very enthusiastic about Mason's plans for the Mark III; discusses the design. Comments on difficulties caused by irregularity of the Dover bases and problem of finding suitable places for microphones. Clews plans to go to Shoeburyness to arrange shell wave experiments and plans to have two of his men there.

Douglas [R.Hartree] to [W.L. BRAGG]  W.L. BRAGG/66A/81  13 Dec. 1940

Contents:
Manchester 4pp., MS
Has been working on the approximate method of calculating meteor corrections; discusses the method. Thanks Bragg for the trajectory calculations. Bragg has oversimplified the situation by neglecting the variation of density with height; comments on this.

[W.L. BRAGG] to E.N.da C.Andrade  W.L. BRAGG/66A/82  20 Dec. 1940

Contents:
1/3 page, typescript
Thanks Andrade for suggestion about the Eindhoven. Comments on this. Will take it up with Mason.

[W.L. BRAGG] to C. Mason  W.L. BRAGG/66A/83  20 Dec. 1940

Contents:
¼ page, typescript
Is enclosing letter from Andrade.

E.N.da C.Andrade to W.L. BRAGG  W.L. BRAGG/66A/84  23 Dec. 1940

Contents:
Ministry of Supply 1/3 page, typescript
Acknowledges letter. Sees no difficulty in applying the idea to a six string Eindhoven; comments on this.

C.C.Mason to W.L. BRAGG  W.L. BRAGG/66A/85  23 Dec.1940

Contents:
Cambridge Instrument Co. 1p, typescript & MS
Might try experiment on Andrade's idea when he is less busy. Is doutful about the arrangement; afraid there would be no real gain in sensitivity. Comments on Einthoven galvanometer.

[W.L. BRAGG] to E.N.daC.Andrade  W.L. BRAGG/66A/86  30 Dec.1940

Contents:
¼ page, typescript
Thinks Andrade's idea about the Eindhoven should be tried out, so is getting Crowe to rig up something. Submitted Andrade's scheme to Mason and is enclosing copy of Mason's reply.

[W.L. BRAGG] to C.T.D.Lindsay  W.L. BRAGG/66A/87  7 Jan. 1941

Contents:
2/3 page, typescript
Is enclosing note by Hartree on analysis of record of one of the German guns firing across the Channel. Goodwin and Devonshire from Lennard-Jones's Mathematical Laboratory carried out the trajectory calculations. Thinks Lennard-Jones's Laboratory would be convenient centre to which interesting records of German guns could be transferred; comments on this. He and Lennard-Jones would like to arrange dinner for Lindsay on 14th.
With report by Bragg and Hartree; 7 Jan.1941: Preliminary report on the determination of the ballistics of enemy cross-channel guns from sound-ranging records; 7pp., typescript; W.L. BRAGG/66A/88.

[W.L. BRAGG] to [-?-] Baxter  W.L. BRAGG/66A/89  8 Jan. 1941

Contents:
1/3 page, typescript
Thanks Bragg for letter of congratulations [on knighthood]. Work on wind corrections is going ahead in an interesting way.
They are studying simpler method of working our results. Sorry report was so scrappy. Is looking forward to discussing method of working out wind corrections with Baxter.

W.S.Tucker to [W.L.] Bragg  W.L. BRAGG/66A/90  12 Jan. 1941

Contents:
Newcastle upon Tyne 12/3 pages, MS
Pleased things are all right between Bragg and Hodgkinson; comments on this. Is lecturing to candidates for R.A. commissions. Comments on his post at Newcastle. Comments on his wife and daughter, who are in London.

A.H.Atkins to [W.L.] Bragg  W.L. BRAGG/66A/91  19 Jan. 1941

Contents:
Shrewton 2 pages, MS
Has been unable to get away to visit Bragg. Discusses new Sound Ranging manual he is preparing. Wants Philpot to write article on sound ranging in Palestine. Asks for Philpot's address.

Oliver Sherlock to Lawrence Bragg  W.L. BRAGG/66A/92  25 Jan. 1941

Contents:
Ministry of Supply 11/3 pages, typescript
Enclosed Transactions include Prof. Thornton's lecture. Is enclosing copies of Atkinson's chart for superheated and saturated steam; discusses this and the lack of recognition for Atkinson's efforts. Thanks Bragg for hospitality.
With chart: W.L. BRAGG/66A/93

J.E.Lennard-Jones to Lawrence Bragg  W.L. BRAGG/66A/94  28 Jan. 1941

Contents:
Cambridge ¼ page, typescript
Would like Bragg's views on enclosed note from Goodwin on methods of calculating effect of wind and temperature variations on the path of a sound ray in the atmosphere.
With note, 24 Jan.1941; 4 pages, typescript & MS; W.L. BRAGG/66A/95

R.K.Tanner to Lawrence Bragg  W.L. BRAGG/66A/96  31 Jan. 1941

Contents:
Larkhill 1¼ pages, typescript
Major Atkins has asked him to send enclosed circuit which he, Tanner, suggested for the Mark III recorder. Discusses circuit.
With notes: 1¾ pages, typescript; 66A/97 and diagram: 1 page. MS; 66A/98.

[W.L. BRAGG] to Oliver Sherlock  W.L. BRAGG/66A/99  3 Feb. 1941

Contents:
¼ page, typescript
Thanks Sherlock for letter and charts. Is sending copy to Lennard-Jones and will also show chart to some of the engineering people.

C.T.D.Lindsay to Lawrence Bragg  W.L. BRAGG/66A/100  13 Feb. 1941

Contents:
Ministry of Supply ¼ page, typescript
Is enclosing copy of Wind & Temperature Correction Tables for long range sound ranging work.

Douglas R.Hartree to [Lawrence Bragg]  W.L. BRAGG/66A/101  19 Feb. 1941

Contents:
Manchester 1¼ pages, MS
Is enclosing part of draft of method for calculating meteor corrections in sound ranging. Comments on the draft and on number of copies needed. Cockcroft and Whiddington want him to help with some radio valve work; comments on this. Will think about writing something for Atkins.

Secretary to Lawrence Bragg to T.Webster  W.L. BRAGG/66A/102  21 Feb. 1941

Contents:
¼ page, typescript
Acknowledges receipt of letter and enclosure.

[Lawrence Bragg] to Douglas R.Hartree  W.L. BRAGG/66A/103  24 Feb. 1941

Contents:
2/3 page, typescript
Thanks Hartree for draft; comments on this. Baxter and one of Blamey's men at Salisbury Plain have been quite won over to Hartree's methods. Will leave notes as to programme with Lindsay; comments on this. Miss Smith will type out the drill on separate page so it can be modified independently. Oliphant told him Hartree was doing some of the magnetron calculations.

[Lawrence Bragg] to C.C.Mason  W.L. BRAGG/66A/104  27 Feb. 1941

Contents:
1/3 page, typescript
Understands Mason wants celluloid film viewing apparatus back from A.D.E.E. Has written to Black about it. He leaves soon for Canada. Sorry Mason has been inconvenienced.

[Lawrence Bragg] to D.H.Black  W.L. BRAGG/66A/105  27 Feb. 1941

Contents:
½ page, typescript
Asks Black to return viewing apparatus to [C.C.] Mason; comments on this. Suggests Black find out if other equipment borrowed from the Cambridge Instrument Co. is still needed or can be returned.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/106  28 Feb. 1941

Contents:
Ministry of Supply ¼ page, typescript
Acknowledges letter. Will do what he can to clear up the GSR position.

D.H.Black to Lawrence Bragg  W.L. BRAGG/66A/107  1 March 1941

Contents:
Air Defence Experimental Establishment, Christchurch
2/3 page, typescript
They are returning viewing apparatus to the Cambridge Instrument Co. Sends good wishes for Bragg's stay in U.S.A.
With copy of letter to the Cambridge Instrument Co., 1 March 1941 saying they are returning apparatus; 1/3 page, typescript; W.L. BRAGG/66A/108

H.M.Clarke to Lawrence Bragg and [Lennard] Jones  W.L. BRAGG/66A/109  4 March 1941

Contents:
Brooke Hall, Norwich 1/3 page, MS
Sound Ranging films sould be sent to Capt.P.W.E. Taylor.

Headquarters Canadian Corps Artillery (Brig.J.C.Stewart) to [Lawrence] Bragg  W.L. BRAGG/66A/110  4 March 1941

Contents:
¼ page, typescript
Arrangements between Bragg and G.M.Carrie have been approved and Carrie has been authorised to make detailed arrangements.
MS note added [by Bragg] about requirements.

[Lawrence Bragg] to J.C.Stewart  W.L. BRAGG/66A/111  10 March 1941

Contents:
¼ page, typescript
Acknowledges letter. Discussed with [G.M.] Carrie and [J.E.] Lennard-Jones arrangements for Carrie to send personnel to Cambridge. He, Bragg, leaves for Canada shortly, so Lennard-Jones will make the arrangements.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/112  13 March 1941

Contents:
2/3 page, typescript
New grid arrangement sounds quite exciting; comments on this. Clews is preparing report on the work at Dunmow. Worthwhile getting Clews to bring the films to Larkhill and going over them with Atkins. Hopes Carrie will be able to send men to work with Lennard-Jones and Clews.

D.R.Hartree to Miss Smith [Sec. to Lawrence Bragg]  W.L. BRAGG/66A/113  14 March 1941

Contents:
Manchester ½ page, MS
Is having copies of the figure and table for his sound ranging report made in Manchester. Asks Miss Smith to send the copies she has been working on.

D.R.Hartree to Miss Smith  W.L. BRAGG/66A/114  5 April 1941

Contents:
Manchester 1 page, MS
Is returning three copies of sound ranging report. Lists people who are to receive copies. Thanks her for work.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/115  29 Oct. 1941

Contents:
Amesbury 1¾ pages, MS
Pleased to learn that Bragg is back. Invites him and his family to visit. Harold [Hemming] says the USA is a long way from war and ill prepared. Robert Tanner will be back soon but Harold [Hemming] is arranging a lecture tour; comments on latter. Pitt has written about his discussions with Bragg on refractories.
Gausden was pleased to see Bragg.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/116  31 Oct. 1941

Contents:
2/3 page, typescript
Had good time in Canada. Met Hemming and Tanner just before he left Montreal. Would like to devote to sound ranging much of the Physics Sub-Committee meeting on 28 November; comments on this. He will be visiting Christchurch soon. Congratulates Joan on her engagement.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/117  11 Nov. 1941

Contents:
2/3 page, typescript
Is looking forward to visiting Christchurch on 16th. Wants to discuss artillery survey. Has been looking through Clews' report on wind corrections. There is something odd about a number of the results; comments on this. Hartree wondered whether the details were suitable for discussion at the Physics Sub-Committee.

[Lawrence Bragg] to C.C.Maier  W.L. BRAGG/66A/118  5 Dec. 1941

Contents:
1/3 page, typescript
Keen to do experiments with Maier's double grid hot-wire microphone which has linear characteristics; comments on this. Thanks Maier for his kindness when he, Bragg, visited Fort Monmouth.

[Lawrence Bragg] to W.S.Nye  W.L. BRAGG/66A/119  5 Dec. 1941

Contents:
2/3 page, typescript
Thanks Nye for his kindness in Washington. Is enclosing letter for Major Maier. People there are interested in the double grid hot-wire microphone with linear characteristics; comments on this. There have been some interesting British developments in the apparatus.

[Lawrence Bragg] to Alexander King, Ministry of Supply  W.L. BRAGG/66A/120  5 Dec. 1941

Contents:
¼ page, typescript
Is enclosing note about microphone wanted by the General Physics Committee.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/121  5 Dec. 1941

Contents:
1/3 page, typescript
Has written to W.S.Nye about the hot wire microphones, enclosing letter to be forwarded to whoever is in charge of the experimental work at Fort Monmouth.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/122  1 Jan. 1942

Contents:
Larkhill 1 page, typescript
Andrade would like to see the work at Larkhill; comments on this Philpot is to visit with Wilfred Taylor and Arthur Simms.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/123  3 Jan. 1942

Contents:
¼ page, typescript
No reason why Andrade should not be invited to Larkhill. Delighted Philpot, Taylor and Simms are to visit.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/124  13 Jan. 1942

Contents:
Chester 2/3 page, typescript
Had good evidence of the activities of Bragg's Committee in letter from J. Cockcroft which "breathes the spirit of cooperation". Hodge at Fildean did not know of the new arrangements. New base on the east side of the range should be in action soon; comments on this.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/125  21 Jan. 1942

Contents:
A.D.R.D.E. Somerford 1/3 page, typescript
Bragg mentioned that is was not possible to publish the Sound Ranging Manual written by the School of Survey. Paterson says publication of manuals has been suspended but pamphlets containing essential matter may be produced.

W.S.Nye to Lawrence Bragg  W.L. BRAGG/66A/126  2 Feb. 1942

Contents:
Washington ½ page, typescript
Acknowledges letter which he has forwarded to Lt.Col.Maier. Interested in recent developments in sound ranging equipment in England and is making an official request to learn about it.
They are not doing anything very interesting on that subject.
With copy: W.L. BRAGG/66A/127

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/128  3 Feb. 1942

Contents:
Larkhill ¼ page, typescript
Has been suggested that Lloyd-Owen should join them as a Sound Ranging Officer. Asks Bragg's opinion of Lloyd-Owen.

[W.L. BRAGG] to A.H.Atkins  W.L. BRAGG/66A/129  5 Feb. 1942

Contents:
¾ page, typescript
Discusses Lloyd-Owen. Was delighted to get report about analysis of the Shoebury-Clacton experiments; comments on this.

Maurice Hill to Lawrence [Bragg]  W.L. BRAGG/66A/130  24 March 1942

Contents:
Edinburgh 2/3 page, MS
Asks where he might obtain an Einthoven String Galvanometer of the six string type. Comments on this.

[Lawrence Bragg] to Maurice Hill  W.L. BRAGG/66A/131  4 April 1942

Contents:
1/3 page, typescript
Quotes extract from letter from [A.H.] Atkins asking that Hill send official request for six string galvanometer; comments on this.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/132  8 April 1942

Contents:
2/3 page, typescript
Would like to accept invitation to stay. Wants their report to be authoritative account of what field artillery observation can do; comments on this.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/133  29 April 1942

Contents:
¼ page, typescript
Thanks him for report. Drafted out Hemming's notes on flash spotting. Wants Committee's report to be as telling as possible.

[Lawrence Bragg] to E.F.Baxter  W.L. BRAGG/66A/134  29 April 1942

Contents:
½ page, typescript
Discusses use of underwater microphone. Pleased Baxter is making report on feasibility of sound ranging observations from a climatological point of view; comments on this.

H.Hemming to Lawrence Bragg  W.L. BRAGG/66A/135  29 April 1942

Contents:
½ page, typescript
War Office has given permission to send 1918 sound ranging apparatus to the Cavendish Laboratory; comments on this.

[Lawrence Bragg] to Col.Leigh, R.A.School of Survey, Larkhill  W.L. BRAGG/66A/136  2 May 1942

Contents:
¼ page, typescript
Thanks Leigh for arranging to send 1918 sound ranging apparatus to the Cavendish Laboratory; comments on this.

War Department  W.L. BRAGG/66A/137  6 May 1942

Contents:
Larkhill 1 page, printed & MS
Consignee's certificate for delivery of 1918 S.R. apparatus.

Lawrence Bragg to H.Hemming  W.L. BRAGG/66A/138  22 June 1942

Contents:
½ page, typescript
Shenstone arrived late so was unable to come on Saturday.
Troops had moved from Orwell on Sunday; comments on this. It was an impressive show and will help with his report to the Advisory Council.

H. Hemming to Lawrence Bragg  W.L. BRAGG/66A/139  29 June 1942

Contents:
Larkhill ½ page, typescript
Captain Cannings wants a Stanzl Apparatus for teaching purposes but Reynolds & Branson Ltd say these are not being made. Asks if the Cavendish Laboratory could lend one. Refers to exercises with the 8th Survey.
With enclosure: Reynolds & Branson Ltd, Leeds, 10 June 1942, to H.E. Cannings: they have stopped making Stenzl Apparatus until after the War. W.L. BRAGG/66A/140

[W.L. BRAGG] to H.H. Hemming  W.L. BRAGG/66A/141  3 July 1942

Contents:
¼ page, typescript
Has not got a Stenzl apparatus in the Laboratory. Short of all teaching apparatus because they have so many radio students.

A.H. Atkins to Lawrence Bragg  W.L. BRAGG/66A/142  24 Sept. 1942

Contents:
Chester 2 pages, typescript & MS
Quotes extracts from letter from Bill Taylor commenting on the Staff College, production of the second pilot model of the Canadian Radio Link, pilot models of the Mark IV comparator, the linear microphone and sound ranging in the Middle East. Atkins comments on Sound Ranging war experience in the Middle East and on Fewkes, who has arrived at the Staff College. George Lewsey is trying to get transferred to the Commandoes. Whetton was not interested in developments at Larkhill. When he left Larkhill, hoped everything would run smoothly and that the development work would not be reactionary. Refers to visit of Carrie and Ted Hague. The Canadians have gone all out for the new Radio Link; comments on this.

[Lawrence Bragg] to A.H. Atkins  W.L. BRAGG/66A/143  29 Sept. 1942

Contents:
1/3 page, typescript
Thanks Atkins for letter. Refers to troubles in sound ranging. Is sure they can preserve the advance Atkins created. Cockcroft is a great ally.

Harry Meigh to Lawrence Bragg  W.L. BRAGG/66A/144  30 Sept. 1942

Contents:
1st Independent Sound Ranging Battery, R.A.
1/3 page, typescript
Has 200 rolls of Kodak Photographic Paper Strip 13/8". Asks if Bragg would like to have it.

[Lawrence Bragg] to H.Meigh  W.L. BRAGG/66A/145  2 Oct. 1942

Contents:
¼ page, typescript
Would like to have the paper for the 1918 recorder.

United States Office of Scientific Research & Development (David B.Langmuir) to Lawrence Bragg  W.L. BRAGG/66A/146  13 Oct. 1942

Contents:
London 2/3 page, typescript
Major John Simpson would be pleased to discuss with Bragg the sound ranging methods used in the U.S.Army; comments on this.

Ministry of Supply (W.B.Mann) to Lawrence Bragg  W.L. BRAGG/66A/147  13 Oct. 1942

Contents:
London ½ page, typescript
David Langmuir has suggested that Major John Simpson contact Bragg to discuss Field Artillery in the U.S.A. Asks Bragg to refer any useful information which emerges from the meeting to the Ministry of Supply for further circulation.

[Lawrence Bragg] to D.B.Langmuir, O.S.R.D.  W.L. BRAGG/66A/148  15 Oct. 1942

Contents:
2/3 page, typescript
Delighted Langmuir has come to Britain to do scientific liaison work; comments on this. Comments on exchange of sound ranging information between Britain and U.S.A. Would like to get in touch with [John] Simpson and invite him to visit Salisbury with the General Physics Committee. Suggests he meet Simpson in London on 29 October.

United States Office of Scientific Research & Development (David B.Langmuir) to Lawrence Bragg  W.L. BRAGG/66A/149  17 Oct. 1942

Contents:
London 1/3 page, typescript
Will be pleased to attend the English-Speaking Union party. Major Simpson will be delighted to meet Bragg on 29 October; comments on this.

United States Office of Scientific Research & Development (David B.Langmuir) to Lawrence Bragg  W.L. BRAGG/66A/150  19 Oct. 1942

Contents:
London 1/3 page, typescript
Asks if Lieutenant-Colonel Ellerson might join Bragg and Major Simpson on 29 October. Ellerson is the Commanding Officer of an observation battalion of the U.S.Army.

[Lawrence Bragg] to D.Langmuir, O.S.R.D.  W.L. BRAGG/66A/151  21 Oct. 1942

Contents:
1/3 page, typescript
Will be delighted to see Simpson and Ellerson on 29th. Hopes Langmuir will be able to join them for lunch. Comments on arrangements for their meeting.

[Lawrence Bragg] to D.Langmuir, O.S.R.D.  W.L. BRAGG/66A/152  24 Oct. 1942

Contents:
¼ page, typescript
Confirms arrangements for meeting on 29 October.

H.Meigh to Lawrence Bragg  W.L. BRAGG/66A/153  [Oct.1942]

Contents:
1st S.R.Battery R.A., Dover
¼ page, typescript
Has forwarded carton of photographic paper strip. Asks Bragg to complete and return attached form.

A.D.R.D.E. (D.H.Black) to Lawrence Bragg  W.L. BRAGG/66A/154  24 Oct. 1942

Contents:
Malvern ¼ page, typescript
Is enclosing report on preliminary trials of apparatus locating flash and sound carried out at Larkhill.
With report, 23 Oct. 1942; 5 pages, typescript; W.L. BRAGG/66A/155.

[Lawrence Bragg] to H.H.Hemming  W.L. BRAGG/66A/156  30 Oct 1942

Contents:
¾ page, typescript
Is returning report on accuracy of sound ranging. Archambault has asked for set of sound ranging reports; has referred him to Langmuir. Sets of reports should go through military liaison at the Survey School and through the N.R.D.C. people at the [U.S.A.] Embassy. Comments on Hemming's work on the triangle-cum-flash method. Would like to visit the Plain; suggests dates.

[Lawrence Bragg] to C.J.B.Clews  W.L. BRAGG/66A/157  3 Nov. 1942

Contents:
¼ page, typescript
Thanks Clews for report on meteorological corrections.

[Lawrence Bragg] to Col. J.Leigh  W.L. BRAGG/66A/158  6 Nov. 1942

Contents:
½ page, typescript
Asks if he might visit Larkhill on 16th and 17th November. Comments on possible arrangements.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/159  6 Nov. 1942

Contents:
Larkhill ½ page, typescript
Would be pleased to see Bragg on 16th and 17th; comments on this.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/160  9 Nov. 1942

Contents:
1/3 page, typescript
Outlines arrangements for his visit to Larkhill.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/161  9 Nov. 1942

Contents:
Larkhill ½ page, typescript
The 16th and 17th will be fine for Bragg's visit. They are planning a full trial of the Apparatus Locating Flash and Sound on night of the 16th.

John A.Leigh to Lawrence Bragg  W.L. BRAGG/66A/162  9 Nov. 1942

Contents:
Larkhill 1/3 page, typescript
Acknowledges letter. November 16th and 17th will be convenient for visit.

[Lawrence Bragg] to C.J.B.Clews  W.L. BRAGG/66A/163  7 Dec. 1942

Contents:
½ page, typescript
Thanks Clews for specimens of the revised drawings. Discusses these. Must be sure that the results are cast-iron and that nobody can pick out any arithmetical slips.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/164  11 Dec.1942

Contents:
A.D.R.D.E., Malvern ¼ page, typescript
Is sending recent report on Flash-Bang.
With report: The use of flash to bang measurements for the location of guns; 2 pages, typescript; W.L. BRAGG/66A/165.

C.J.B.Clews to Lawrence Bragg  W.L. BRAGG/66A/166  12 Dec. 1942

Contents:
Larkhill ¾ page, typescript
Discusses the diagrams which were sent to Bragg. They have checked the results very carefully. The complete report is having a limited circulation. If Bragg has any views on circulation, he should write to Col.Schonland. Thanks Bragg for his help.
With distribution list: 2/3 page, typescript & MS, W.L. BRAGG/66A/167

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/168  15 Dec. 1942

Contents:
Chester 1¼ pages, typescript
Had letter from Bill Taylor who has been "spreading the gospel of S.R." amongst Counter Batteries. Quotes extract from Taylor's letter about results of recent shoots and comments on Taylor's opinion of Fewkes, who rates the capacity of sound ranging too low.

[Lawrence Bragg] to C.J.B.Clews  W.L. BRAGG/66A/169  16 Dec. 1942

Contents:
¼ page, typescript
Pleased the apparent error has been explained. Thinks Clews should keep a supply of copies of the report.

C.J.Birkett Clews to Lawrence Bragg  W.L. BRAGG/66A/170  17 Dec. 1942

Contents:
Larkhill ½ page, typescript
Thinks Cockcroft and Schonland plan to make only a few copies of the full report; comments on this and suggests Bragg approach Cockcroft or Schonland about extra copies.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/171  10 Dec. 1942

Contents:
2/3 page, typescript
Thinks all is going fairly well at Larkhill. Clews has finished his report on accuracy; discusses this. Hemming has been pushing the "flash-bang", which seems to have real possibilities. Did not have much chance to talk to Fewkes.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/172  19 Dec. 1942

Contents:
1/3 page, typescript
Clews has sent him final draft of report. Thinks it is in good shape. Comments on limited distribution of the report. Hopes Cockcroft will keep a small reserve for distribution as required.

A.H.Atkins to [Lawrence] Bragg  W.L. BRAGG/66A/173  23 Dec. 1942

Contents:
Lathom 22/3 pages, MS
Interested to hear about Clews' report on accuracy. Should get back to a more easily obtained Meteor; comments on this and on the development of "Registration". Asks for information about causes of blackening and roughing of the journals of turbines; discusses this.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/174  24 Dec. 1942

Contents:
A.D.R.D.E., Malvern 1/3 page, typescript
Pleased Bragg has been through the Clews report. Will do as he suggests about reserve copies. Asks if it should be circulated amongst the F.A.O. Panel.

[Lawrence Bragg] to E.F.Baxter  W.L. BRAGG/66A/175  28 Dec. 1942

Contents:
¼ page, typescript
Interested to see Baxter's report on meteorological corrections. Is having it circulated to the F.A.O. Panel.

[Lawrence Bragg] to [T.W.] Fox, Ministry of Supply  W.L. BRAGG/66A/176  28 Dec. 1942

Contents:
¼ page, typescript
Asks him to arrange to circulate the enclosed report by Baxter to members of the F.A.O. Panel.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/177  28 Dec. 1942

Contents:
¼ page, typescript
Thinks members of the F.A.O. Panel should see Clew's report.

Ministry of Supply (T.W.Fox) to Lawrence Bragg  W.L. BRAGG/66A/178  31 Dec. 1942

Contents:
London 1/3 page, typescript
Has circulated copies of Baxter's report. Is enclosing copy for Bragg
With report by E.F.Baxter: An investigation of the errors in S.R.Location from the use of the corrections due to wind at some low level instead of the corrections due to the wind and temperature structure to greatest height reached by the sound path of least time. 6 pages, typescript; W.L. BRAGG/66A/179.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/180  4 Jan. 1943

Contents:
Larkhill 2/3 page, typescript
Sound Ranging Manual is being written in three pamphlets. The first has been completed by Fewkes and others; comments on this and asks if Bragg would look over it.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/181  7 Jan. 1943

Contents:
¼ page, typescript
Will try to find time to read draft. Suggests he send copy to Andrade for comment.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/182  12 Jan. 1943

Contents:
Larkhill 1/3 page, typescript
Is sending Bragg the Sound Ranging Manual. Thanks him for offering to read it.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/183  18 Jan. 1943

Contents:
1/3 page, typescript
Had heard nothing of the proposed visit by C.E.H. to America. Will mention this to Cockcroft. Will return the S.R. booklet in a few days. Will not be able to go through it as carefully as he would wish.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/184  22 Jan. 1943

Contents:
½ page, typescript
Has read the sound ranging pamphlet with great interest. Likes its general style and arrangement. Asks if Hemming is sending a separate copy to Andrade or should he pass on his copy.
Would like to look through the report again.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/185  25 Jan. 1943

Contents:
Larkhill 1/3 page, typescript
Has sent copy of pamphlet to Andrade so Bragg may keep his copy until he is ready to return it with any comments.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/186  2 Feb. 1943

Contents:
Larkhill 1/3 page, typescript
Would appreciate it if Bragg would return sound ranging draft with his criticisms in the near future. Anxious to get the pamphlets finished for new regiments being formed in India and the Dominions to use in their training.

U.S.A. Office of Scientific Research & Development (Bennett Archambault) to Lawrence Bragg  W.L. BRAGG/66A/187  8 Feb. 1943

Contents:
London ¼ page, typescript
Is enclosing letter, with copy, from V.O.Knudsen.
With enclosure: V.O.Knudsen to Lawrence Bragg
New York 3¾ pages, typescript 66A/188

[no title]  W.L. BRAGG/66A/188  23 Jan. 1943

Contents:
There has been set up in the USA, under the NDRC, a gun ranging and locating project. Discusses the project, results achieved and work planned. Would be pleased to receive Bragg's comments, particularly in connection with the urgency of the proposed developments. Would also like information about recent developments in gun ranging and locating in Britain.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/189  9 Feb. 1943

Contents:
½ page, typescript
Comments on the sound ranging pamphlet which he is returning.

[Lawrence Bragg] to Bennett Archambault  W.L. BRAGG/66A/190  11 Feb. 1943

Contents:
½ page, typescript
Thanks him for forwarding interesting letter from Knudsen. Is sending copy to Ellis, Chairman of the General Physics Committee , Experimenters at Larkhill must be kept in close touch with Knudsen's group; comments on this.

[Lawrence Bragg] to C.D.Ellis  W.L. BRAGG/66A/191  11 Feb. 1943

Contents:
¼ page, typescript
Is enclosing copy of letter from Knudsen. The Larkhill people should know about this work and should send Knudsen their results. Asks Ellis to return letter so he can send it to Hemming and get Hemming to send set of papers to Knudsen.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/192  13 Feb. 1943

Contents:
Larkhill 2/3 page, typescript
Acknowledges letter. Andrade returned pamphlet with biting criticisms but did not deal with whole pamphlet. Leigh is now considering how to get the work authoritatively vetted.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/193  15 Feb. 1943

Contents:
¾ page, typescript
Sorry he let Hemming down over sound ranging pamphlet. Did not have time to do the job properly; comments on this. Asks if Atkins has seen the pamphlet; his suggestions would be valuable.
Taylor would be the best person to vet it; comments on this. Will miss meeting of Physics Committee.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/194  9 March 1943

Contents:
Liverpool 12/3 pages, typescript
Sorry for delay in replying to letter about corrosion of turbine bearings. Trouble has already been experienced by Holts steamers. Pity the O.C. 4th Survey is only interested in survey; sound ranging has not had much of a chance in the 8th Army. Comments on this. Understands from Leigh at Larkhill that decisions about microphones, radio link and carrier system are stagnant. Leigh is sending him the new pamphlets for comment; does not think he will vet thm from the scientific point of view. Clews and Bragg would do that best.

E.F.Baxter to Lawrence Bragg  W.L. BRAGG/66A/195  9 March 1943

Contents:
Meteorological Office, School of Artillery, Larkhill 1/3 page, typescript
Is enclosing correction to report "An investigation concerning cat's-cradles".

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/196  15 March 1943

Contents:
2/3 page, typescript
Hopes to hear all about the Pye apparatus at the F.A.O. Panel meeting; Clews said it was letting them down. Now Taylor has gone out to the Near East, sound ranging should be used in every way possible. Is asking Leigh if he can go over the sound ranging pamphlet carefully. Sees no reason why Clews should not help with the pamphlet.

F.A.O. Panel  W.L. BRAGG/66A/197  March 1943

Contents:
1 page, duplicated [MS notes by WLB]
Agenda for meeting to be held on 25 March 1943.

F.A.O. Panel  W.L. BRAGG/66A/198a  11 Feb. 1943

Contents:
Larkhill 3 pages, duplicated
Report: Measurement of wind at about 500 ft. by C.J.Birkett Clews and E.F.Baxter.

F.A.O. Panel  W.L. BRAGG/66A/198b  23 Feb. 1943

Contents:
Larkhill 3¾ pages, duplicated
Report: Errors in sound ranging locations from the use of corrections due to some wind at low level, continued from structures given in the report of December 1942, by E.F.Baxter.

[Lawrence Bragg]  W.L. BRAGG/66A/199  [ca. March 1943]

Contents:
3 pages, MS
Notes on reports by Clews and Baxter (W.L. BRAGG/66A/198a & W.L. BRAGG/66A/b)

A.J.Philpot to Lawrence Bragg  W.L. BRAGG/66A/200  26 March 1943

Contents:
British Scientific Instrument Research Assoc.
12/3 pages, typescript
Does not think the meteorologists have grasped the problem of wind corrections in sound ranging; comments on this. Thinks the present sound ranging people "have confused the paraphernalia of accuracy with accuracy itself"; comments on this. Hemming asked whether the FAO Panel was suggesting the abolition of wind graphs. He would have a sound ranging section trained to use other methods. Other methods would be used under field conditions. Is enclosing note on the issue. Would like to know Cockcroft's real opinion "when he is not surrounded by the experts who produce reams of paper on the slightest provocation".
In Baxter's papers there is suggestion that the wind graph method is the ideal standard against which others should be judged. He, Andrade and Bragg are suspect because they keep reverting to what happened a generation ago.
With note: Wind and sound ranging: 22/3 pages, typescript & MS; W.L. BRAGG/66A/201

[Lawrence Bragg] to A.J.Philpot  W.L. BRAGG/66A/202  27 March 1943

Contents:
1/3 page,typescript
Thanks Philpot for note about wind graph corrections. Is in complete agreement with him and would like to show the note and Philpot's letter to Cockcroft, who is always sympathetic.
Sound ranging business would have been easy if they had been starting from scratch with reasonable people. Best hope is in people like Taylor who have now gone to the Front.

A.J.Philpot to Lawrence Bragg  W.L. BRAGG/66A/203  29 March 1943

Contents:
BSIRA, London ¼ page,typescript
Bragg may send his note to Cockcroft; comments on this.

B.J.Schonland to Lawrence Bragg  W.L. BRAGG/66A/204  1 April 1943

Contents:
Roehampton 2/3 page, typescript
Lists reports which he is enclosing. Bragg will see from these that there is a distressing quarrel going on about the meterological points involved in Clews' paper. Would like Bragg's opinion on the main point at issue, Factor K. He took over the work when it was nearly finished and found that Baxter and Clews were not co-operating; issued instructions that Baxter was to see and agree to the report. Understood this had been done, so disturbed to learn meteorologists are still not satisfied.

E.N.da C.Andrade to Lawrence Bragg  W.L. BRAGG/66A/205  2 April 1943

Contents:
Ministry of Supply, London 2½ pages,typescript
Worried about amound of time being spent in the matter of wind corrections in sound ranging. Comments on the suppositions which have led to so much time being spent on elaborate wind corrections and wind graphs. Thinks the whole outfit is becoming unduly complicated, cumbersome and rigid. Regards talk on further elaborations and complications with dismay and cannot see need for more meteorological personnel; discusses this.

[Lawrence Bragg] to E.N.da C.Andrade  W.L. BRAGG/66A/206  6 April 1943

Contents:
½ page, typescript
Completely sympathizes with Andrade's letter. Has been fighting the "peace-time gadgeteers" ever since he took on the job of looking after sound ranging. Andrade is right about wind corrections. Philpot has written to him in the same way. Suggests he, Andrade and Philpot visit Larkhill. Has sometimes felt like giving it all up; comments on this. Asks if he might send copy of Andrade's letter to Cockcroft.

[Lawrence Bragg] to B.J.Schonland  W.L. BRAGG/66A/207  6 April 1943

Contents:
1¼ pages, typescript
Has felt more unhappy about Field Artillery Observation progress than about anything else he has been concerned with in the war; comments on this. There is a fight between those who have built up a complex system of meteor corrections and those who are convinced from experience in the last war that it is not worthwhile going in for such refinements; discusses this. Will visit Larkhill with Philpot and Andrade and give Schonland a considered opinion. Is enclosing copy of letter from Philpot. Refers to Andrade's opinion. If decision has to be made on Clews' report before he (Bragg) returns from Sweden, Schonland should consult Philpot.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/208  7 April 1943

Contents:
¼ page, typescript
Is enclosing copy of letter from Philpot. Andrade has written to him in the same way. Would like to visit Larkhill when he returns from Sweden.
With enclosures: copy of letter from Philpot, 26 March 1943; 12/3 pages, typescript; W.L. BRAGG/66A/209 (see W.L. BRAGG/66A/200); Copy of Philpot's note on wind and sound ranging, 2½ pages, typescript; W.L. BRAGG/66A/210 (see W.L. BRAGG/66A/201) And copy of letter from E.N.da C.Andrade, 2 April 1943 2 pages, typescript; W.L. BRAGG/66A/211 (see W.L. BRAGG/66A/205).

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/212  12 April 1943

Contents:
Liverpool 1¼ pages, typescript
Is enclosing copy of Bill Taylor's letter about his experience in Tunisia; comments on this. Has sent notes to Leigh but has not raised question of organisation of Survey Regiments. Problem is due to fact that Survey Regiments are commanded by regular officers who feel that in Survey they are in a blind-alley occupation; comments on this. Thinks the Counter Battery Officer should command sound ranging and flash spotting; comments on this

P.W.E.Taylor to [A.H.Atkins]  W.L. BRAGG/66A/213  2 April 1943

Contents:
BNAF 12/3 pages, typescript copy
Has got completely fed up with the R.H.Q. of the 5th and has left them; discusses this. Thinks he will be transferred to England and might rejoin the School of Survey. Pleased Atkins doing the final editing of the pamphlet. From his experience in Tunisia learned that normal sound ranging will be at long range; discusses this. Insufficient stress is laid on the fact that sound ranging troops will spend most of their time on static fronts; comments on this. Thinks the Counter Battery Officer should be the commander of Field Survey and Sound Ranging troops; comments on this.

John Cockcroft to [Lawrence] Bragg  W.L. BRAGG/66A/214  12 April 1943

Contents:
Tenby 1 page, MS
Acknowledges letter with notes from Andrade and Philpot. Comments on the notes from Andrade and Philpot. Thinks the effect of the wind graphs should be tested abroad; comments on this.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/215  22 June 1943

Contents:
Liverpool 1½ pages, typescript
Pleased Bragg has returned from Sweden. Comments on Bragg's news about Schnapps. George Lewzey is still in hospital; comments on this. Lewzey says sound ranging justified itself completely. Lewzey had to modify some of his technical preconceptions but was eventually given a free hand to use whatever methods suited the conditions. Future of sound ranging depends on ability of S.R. Battery Commanders to create and use methods to suit the conditions existing at the time; comments on this, referring particularly to problems in mountainous country

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/216  25 June 1943

Contents:
Liverpool 1¼ pages, typescript
Col.Leigh is anxious to see Bragg. Leigh says the microphone controversy is still going on, the new comparator will be available soon and the new radio link is well in production. George Lewzey has been awarded the M.C. Leigh would like him and Bragg to visit Larkhill; comments on this. Thinks Leigh would like Bill Taylor back. Bill Taylor thought future of sound ranging lay in ability to do long range location, so thinks the linear microphone would be the most promising line of research.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/66A/217  27 June 1943

Contents:
Larkhill 1 page, typescript
Is back from North Africa where sound ranging was handled with skill, determination and incredible bravery. Suggests Bragg, Andrade and Atkins visit Larkhill and suggests dates.

[Lawrence Bragg] to J.Leigh  W.L. BRAGG/66A/218  29 June 1943

Contents:
¼ page, typescript
Delighted it is convenient for him to come to Larkhill on 15 July; comments on this. Will ask Atkins to come too.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/219  29 June 1943

Contents:
1/3 page, typescript
Is going to Larkhill on 15th July. Comments on this and asks if Atkins can go too.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/220  29 June 1943

Contents:
¼ page, typescript
Will be visiting Larkhill on 15 July; comments on this. Pleased to hear of the success of sound ranging in North Africa.

John A.Leigh to [Lawrence] Bragg  W.L. BRAGG/66A/221  1 July 1943

Contents:
School of Artillery [Larkhill] 1½ pp., MS
Pleased Bragg can visit on 15th. [Hemming] suggested Andrade might come too but he thinks it would be better if Andrade were to visit another time; comments on this. Wants to discuss location of shell waves. Things in sound ranging are going well.

[Lawrence Bragg] to J.A.Leigh  W.L. BRAGG/66A/222  6 July 1943

Contents:
23 page, typescript
Is looking forward to visit. Hemming is being invited to attend General Physics Committee meeting to talk about his experiences in North Africa; comments on this. Asks if he might have another look at the pamphlet.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/223  6 July 1943

Contents:
Liverpool 1/3 page, typescript
Would like to accompany Bragg to Larkhill on 15th; comments on this.

John A.Leigh to [Lawrence] Bragg  W.L. BRAGG/66A/224  8 July 1943

Contents:
Larkhill 1 page, MS
[Hemming] will be pleased to attend meeting on 15th. Pleased Bragg will not have to hurry his visit. Cannot let him have a copy of the pamphlet at the moment; comments on this.

[Lawrence Bragg] to J.A.Leigh  W.L. BRAGG/66A/225  9 July 1943

Contents:
¼ page, typescript
Atkins will come with him on 15th. Pleased Hemming is to make report to the Physics Committee.

[Lawrence Bragg] to C.S.Wright  W.L. BRAGG/66A/226  19 July 1943

Contents:
2/3 page, typescript
Comments on Hemming's experiences of flash-spotting and sound-ranging in the North African campaign. Target finding is a pressing problem, as is that of locating trench mortars. Work at Fairlie getting direction of under-water sounds might suggest some ideas. Asks if he might get details of this work from Roberts and pass them on to the Survey School at Larkhill or if an expert from Larkhill might visit Fairlie.

[Lawrence Bragg] to B.J.Schonland  W.L. BRAGG/66A/227  28 July 1943

Contents:
¼ page, typescript
Is enclosing notes on visit to Larkhill. Pleased sound ranging has proved to be so useful.
With enclosure: Notes on visit to Larkhill, 15th-18th July 1943 and on the reports of the functioning of sound ranging in the North African campaign. 2½ pages, typescript; W.L. BRAGG/66A/228

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/229  28 July 1943

Contents:
23 page, typescript
Is enclosing notes on his visit to Larkhill. Will not be able to attend next meeting of Physics Committee. Has been to Fairlie to see if the directional work on under-water sounds might help with the mortar problem; comments on this.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/230  28 July 1943

Contents:
1/3 page, typescript
Is enclosing copy of notes he is sending to the Chairman of the Physics Committee. Cannot go to the next Committee meeting. Asks if Scarrett needs any data for calculating the caustics of some typical trajectories.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/231  29 July 1943

Contents:
¼ page, typescript
Is enclosing comments he is making to Physics Committee about visit to Larkhill. Asks Atkins to let him know if he thinks they should be modified in any way.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/232  29 July 1943

Contents:
Larkhill ½ page, typescript
Will be delighted to see Emerson; comments on this. General McNaughton was asking how scientific matters were progressing, particularly the microphone.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/233  31 July 1943

Contents:
¼ page, typescript
Is enclosing Robert's address. If Hemming writes to Roberts, Roberts will arrange Emerson's visit. Asks if Hemming has a spare film showing records of the mortar.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/234  2 Aug. 1943

Contents:
Larkhill ½ page, typescript
Thanks Bragg for masterly summary of sound ranging experience in North Africa. When Scarrott returns from leave will do caustics and get him to send Bragg some mortar films. Has written to Roberts.
With copy of letter to J.K.Roberts, 2 Aug.1943 inviting Emerson to visit Larkhill and discussing this: 23 p. typesc. W.L. BRAGG/66A/235

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/236  4 Aug. 1943

Contents:
Liverpool ¾ page, typescript
Sorry he could not stay longer at Larkhill. Is returning Bragg' comments which he thinks will meet the situation. Is enclosing some comments of his own. There is now a North African School of Artillery to which Bill Taylor is attached. When Taylor returns might investigate with him possibility of checking wind graphs with observed meteor at 250/300 ft.
With notes by Atkins on North African report: 1½ pages, typescript W.L. BRAGG/66A/237 and copy of Bragg's notes on Larkhill visit and North African report, 2½ pages, typescript; W.L. BRAGG/66A/238 (see W.L. BRAGG/66A/228) and MS notes by Bragg on time of deployment 1½ pages; W.L. BRAGG/66A/239

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/240  6 Aug. 1943

Contents:
½ page, typescript
Thanks Atkins for notes which he will report to the Physics Committee on 13th August. Thinks Committee will be interested in general proposition that speed in deployment is of greater value in defence than in attack; comments on this. Talked to Scarrott about caustics and is getting him some trajectories of their gun howitzer; comments on this.

B.J.Schonland to Lawrence Bragg  W.L. BRAGG/66A/241  6 Aug. 1943

Contents:
Roehampton ¼ page, typescript
Thanks Bragg for notes on visit to Larkhill. Pleased to learn of success of sound ranging in the recent fighting.

A.J.Baxter to Lawrence Bragg  W.L. BRAGG/66A/242  9 Aug. 1943

Contents:
Larkhill 1/3 page, typescript
In Col.Leigh's absence opened Bragg's note on proposed pamphlet on sound ranging. Will arrange for those interested to meet to discuss Bragg's suggestions. Thanks Bragg for his help.

Harold [Hemming] to [Lawrence] Bragg  W.L. BRAGG/66A/243  12 Aug. 1943

Contents:
Larkhill ½ page, typescript
Is sending copy of Buckley's report. Scarrott's Mortar Detector Device is similar to the Time Interval Dodar. Comments on A.P. work with speech radio and on the microphone wanted. Any form of recorder that does not produce a wave form is a retrograde step. Would like Bragg's comments on the report.

A.J.Baxter to Lawrence Bragg  W.L. BRAGG/66A/244  13 Aug. 1943

Contents:
Larkhill 1/3 page, typescript
Is enclosing notes which were inside folder of "Principles of Sound Ranging". Major Fewkes and [E.J.] Baxter are in process of putting Bragg's suggestions into effect.
With MS notes by T.E.[Emmerson], 24 July 1943 on acoustic ranging; 1 page, W.L. BRAGG/66A/245.

[Lawrence Bragg] to A.J.Baxter  W.L. BRAGG/66A/246  16 Aug. 1943

Contents:
¼ page, typescript
Thanks him for returning Emerson's notes, which were made when they discussed trigger devices. Hopes Emerson will visit Larkhill to discuss circuits with Scarrott.

J.W.Fox to Lawrence Bragg  W.L. BRAGG/66A/247  17 Aug. 1943

Contents:
Ministry of Supply 11/3 pages, typesc.
Committee invited Andrade, Eccles, Higgins, Philpot and Bragg to consider the problem of mortar location and to report to the meeting on 17 September; comments on this. Committee has asked for a joint report to be presented; discusses this. If any proposals require action before 17 September, Professor Ellis will call a special meeting of the Committee. Cockcroft will present a report on the problem and possible solutions, by the A.D.R.D.E. experts.

John A.Leigh to [Lawrence] Bragg  W.L. BRAGG/66A/248  20 Aug. 1943

Contents:
School of Artillery 11/3 pages, MS
Has just returned from leave. Thanks Bragg for his criticisms, of the new manual; comments on this. Thanks Bragg for the notes on his visit. Bill Taylor has come back to the School; comments on this.

T.Emmerson to Lawrence Bragg  W.L. BRAGG/66A/249  25 Aug.1943

Contents:
Fairlie ¼ page, typescript
Visited Capt.Scarrott and spent interesting day discussing the location problem. Have evolved a scheme using high speed relays. Is sending Scarrott references and papers.

P.W.E.Taylor to Lawrence [Bragg]  W.L. BRAGG/66A/250  8 Sept. 1943

Contents:
Winchester 2 pages, MS
Should be delighted to meet Bragg in London on 17th; comments on this and on forthcoming visit to USA. Was able to visit the 4th Survey Regiment and the American Observation Battalion in North Africa; discusses this.

J.W.Fox to Lawrence Bragg  W.L. BRAGG/66A/251  9 Sept. 1943

Contents:
Ministry of Supply ½ page, typescript
Will not call special meeting of the General Physics Committee to consider problem of locating mortars but will consider the matter at the meeting on 17 September. If Bragg's report reaches him by Tuesday, can have it copied and circulated. Is asking Scarrott to attend the meeting.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/252  9 Sept. 1943

Contents:
Larkhill 1½ pages, typescript
Will be delighted to see Bragg again. More is accomplished by Bragg's visiting Larkhill than by a full Panel meeting; comments on this. Scarrott has finished "Mortimer" [Mortar Detector Device] and is trying it out; comments on this. One of their observers visited the Field Artillery Board at Fort Bragg, USA. Quotes from observer's report concerning hot wire microphone and work on mortar location.

J.W.Fox to Lawrence Bragg  W.L. BRAGG/66A/253  10 Sept. 1943

Contents:
Ministry of Supply 1/3 page, typescript
Sir Frank Smith referred to French method of sound ranging involving use of a flux meter and wondered whether it would be of use in location of mortars.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/254  10 Sept. 1943

Contents:
Larkhill ½ page, typescript
Cockcroft is visiting Larkhill on Thursday and wants a demonstration of ALF in its final form. Scarrott and he are going to meeting of the Physics Committee. Thinks the mortar work must be put on an official basis. Asks if Bragg could visit Larkhill for weekend of 18th/19th.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/255  13 Sept. 1943

Contents:
½ page, typescript
Will be pleased to visit Hemming as suggested. Pleased Hemming and Scarrott are attending meeting in London. The experts who have been asked to look into the mortar problem might want to talk to Hemming and Scarrott; comments on this.

[Lawrence Bragg] to T. Emmerson  W.L. BRAGG/66A/256  14 Sept. 1943

Contents:
¼ page, typescript
Thanks Emmerson for the help he gave Scarrott.

A.D.R.D.E. (B. Turner) to Lawrence Bragg  W.L. BRAGG/66A/257  15 Sept. 1943

Contents:
Malvern ¼ page, typescript
Is enclosing copy of report by Capt. Hodgkinson which will be considered at meeting of General Physics Committee on 17 Sept.
With report: The location of field mortars by sound; 14 Sept. 1943; 7 pages, typescript; W.L. BRAGG/66A/258

[Lawrence Bragg] to J.A. Leigh  W.L. BRAGG/66A/259  22 Sept. 1943

Contents:
½ page, typescript
Is enclosing copy of notes on visit to Larkhill. Paterson's ideas about the direction of the work coincided with Leigh's. Will urge Cockcroft to put a first-rate man on the job at ADRDE.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/260  22 Sept. 1943

Contents:
½ page, typescript
Is enclosing notes on visit to Larkhill, which he is sending to the Physics Committee. Thinks Hemming would find the British Columbia University post congenial; comments on this.

[Lawrence Bragg] to J.W. Fox  W.L. BRAGG/66A/261  22 Sept. 1943

Contents:
¼ page, typescript
Is enclosing two copies of his report on visit to Larkhill.

[Lawrence Bragg] to J.D. Cockcroft  W.L. BRAGG/66A/262  22 Sept. 1943

Contents:
¼ page, typescript
Is enclosing notes on visit to Larkhill.

[Lawrence Bragg] to H.Paterson  W.L. BRAGG/66A/263  22 Sept. 1943

Contents:
¼ page, typescript
Is sending notes on visit to Larkhill. Results with binaural method were very poor.
With notes: School of Survey, Larkhill, September 17th-20th 1943 2¾ pages, typescript; W.L. BRAGG/66A/264. With copy: W.L. BRAGG/66A/265.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/266  23 Sept. 1943

Contents:
Larkhill 1/3 page, typescript
Is enclosing notes on the trials of the locator. Use of the trumpets is too difficult and must have an electrical means of recording the answer. Further trials can be done there. Asks if Bragg would like to visit to see another trial.
With notes: The sound locator as a device for determining direction of mortars: trials - Monday 20 Sept. 1943; 23 Sept.1943; 3¼ pages, typescript; W.L. BRAGG/66A/267. With MS notes [by Bragg]; 1½ pages, W.L. BRAGG/66A/268

J.W.Fox to Lawrence Bragg  W.L. BRAGG/66A/269  24 Sept. 1943

Contents:
Ministry of Supply ½ page, types.& MS
Thanks Bragg for report on visit to Larkhill. Has sent copy to Prof.Ellis. Will circulate report to General Physics Committee.

H.M.Paterson to Lawrence Bragg  W.L. BRAGG/66A/270  25 Sept. 1943

Contents:
Ministry of Supply 1/3 page, typescript
Thanks Bragg for notes on visit to Larkhill. Scarrott will be attached to A.D.R.D.E. for a month.

[Lawrence Bragg] to P.W.Taylor  W.L. BRAGG/66A/271  27 Sept.1943

Contents:
23 page, typescript
Thanks Taylor for notes about trial of the acoustic method [for locating mortars]; comments on this and asks Taylor to send report to the Physics Committee. Thinks some variant of Mortimer is the most practical line to follow up. Hopes Scarrott will be able to do some intensive work at ADRDE on its development.

[Lawrence Bragg] to J.W.Fox  W.L. BRAGG/66A/272  27 Sept.1943

Contents:
¼ page, typescript
Is sending copy of letter he has written to Taylor. Will bring Taylor's report on trials of the locator to the meeting but has asked Taylor to send Fox a summary for circulation.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/273  28 Sept.1943

Contents:
ADRDE, Malvern ¾ page, typescript
Thanks Bragg for notes on mortar location. Notes action which has been taken there in connection with investigation of the problem of mortar location. As soon as they have got a little further, will go to Larkhill to discuss the matter. Asks if Bragg would like to join them.

E.T.Goodwin to Lawrence Bragg  W.L. BRAGG/66A/274  [Sept.1943]

Contents:
A.S.E., Witley 1 page, MS
Asks Bragg to forward letter to Major Atkins. He is now working on radar.

T.S.Littler to Lawrence Bragg  W.L. BRAGG/66A/275  29 Sept.1943

Contents:
Stanmore 11/3 pages, typescript
Could come to Cambridge on 3rd or 4th October; comments on this. Technical name of their windscreen matting is Coir. Was used for screening sound locator posts in pre-war days; comments on this. With regard to the mortar problem, thinks main trouble is the length of the horns; discusses this.

J.W.Fox to Lawrence Bragg  W.L. BRAGG/66A/276  30 Sept.1943

Contents:
Ministry of Supply ¾ page, typescript
Will not hold special meeting before 8th October to decide what type of locator shall be used for mortars; comments on this. Bragg's report on visit to Larkhill is being circulated. Has not received any other reports; comments on this.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/277  1 Oct. 1943

Contents:
¼ page, typescript
Would like to go to Larkhill with Cockcroft. Comments on dates.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/278  1 Oct. 1943

Contents:
¼ page, typescript
Is returning scripts. Hopes to come to Larkhill with Cockcroft.

[Lawrence Bragg] to P.W.Taylor  W.L. BRAGG/66A/279  1 Oct. 1943

Contents:
1/3 page, typescript
Is enclosing note from Littler. Comments on the Coir matting which has been successful in screening observers and their posts from buffetting winds. Littler's remarks about the horns are covered by Taylor's trials.

[Lawrence Bragg] to J.W.Fox  W.L. BRAGG/66A/280  2 Oct. 1943

Contents:
¼ page, tpescript
Pleased Hemming, Scarrott and Clews are being invited to meeting Agrees it is not worth holding an earlier meeting.

John A.Leigh to Lawrence Bragg  W.L. BRAGG/66A/281  4 Oct. 1943

Contents:
Larkhill 1¼ pages, typescript
Acknowledges letter and notes. Scarrott is now at Malvern. Thinks the new R/L will be a success.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/282  4 Oct. 1943

Contents:
Larkhill 23 page, typescript
Has sent summary to Fox. Binaural system would have been better for locating guns than mortars; comments on this. Mortimer type of equipment makes fewer demands on the operator.
With copy of letter from H.Hemming to Physics Committee enclosing Taylor's report, 4 Oct.1943; ¼ page, types. W.L. BRAGG/66A/283; and copy of P.W.E.Taylor's report: Test of binaural method (addendum); 1¼ pages, typescript; W.L. BRAGG/66A/284.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/285  5 Oct. 1943

Contents:
23 page, typescript
Is enclosing sample of Coir matting used for Royal Observer Corps posts; discusses this.

[Lawrence Bragg] to E.T.Goodwin  W.L. BRAGG/66A/286  6 Oct. 1943

Contents:
½ page, typescript
Is forwarding letter to Atkins. Gives Atkins' address. Was interested to hear of Goodwin's new job.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/287  13 Oct. 1943

Contents:
Larkhill ¼ page, typescript
Pleased Bragg will visit Larkhill soon. Is enclosing copy of memorandum he sent to General Wilson, Director of Infantry.
With report: Mortar location; 2¾ pages, duplicated & MS; W.L. BRAGG/66A/288.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/289  17 Oct. 1943

Contents:
Larkhill 23 page, typescript
Discusses sample of coir matting and its possible use in sound ranging work.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/290  18 Oct. 1943

Contents:
A.D.R.D.E; Malvern 23 page, typescript
Is enclosing note from Patrick Johnson on the German mortar policy. Pressing on with the Mortimer, Kodak and Radar methods. Refers to trial on detection of mortars by G.L.Mk.iii. Problem is to make set suitable for taking with the Field Army.
With report by Patrick Johnson, 12 Oct.1943: Location of enemy mortars; 2 pages, typescript; W.L. BRAGG/66A/291

[Lawrence Bragg] to J.C.B.Clews  W.L. BRAGG/66A/292  21 Oct. 1943

Contents:
¼ page, typescript
Thanks Clews for copy of his "magnum opus"; comments on this.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/293  21 Oct. 1943

Contents:
¼ page, typescript
Thanks Hemming for copy of memorandum. Has written to ask Cockcroft when he plans to visit Larkhill.

[Lawrence Bragg] to J.D.Cockcroft  W.L. BRAGG/66A/294  21 Oct. 1943

Contents:
1/3 page, typescript
Thanks Cockcroft for note about the mortar problem. Asks when he plans to visit Larkhill; comments on this. He and Snow are meeting on 27th to make preliminary plans about investigation into the industrial need for physicists.

J.D.Cockcroft to Lawrence Bragg  W.L. BRAGG/66A/295  23 Oct. 1943

Contents:
A.D.R.D.E., Malvern 1/3 page, types.
Is not likely to be able to go to Larkhill before he returns from USA. Refers to trials on location of mortar bombs by G.L. MkIII. The "Mortimer" should be ready for trials in about a week; at present they have inadequate evidence of its bearing accuracy.

[-?-] Bellamy to J.A.Leigh  W.L. BRAGG/66A/296  2 Nov.1943

Contents:
1 page, duplicated
Extracts from letter from Bellamy about "Dingoes" (small armoured cars) and their use in sound ranging work

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/297  6 Nov. 1943

Contents:
½ page, typescript
Cockcroft cannot come to Larkhill before he goes to America. He would like to see Mortimer and the GL Mark III working on mortars. Asks if Hemming tried out the matting; comments on this

A.D.R.D.E. (B.Turner) to Lawrence Bragg  W.L. BRAGG/66A/298  10 Nov. 1943

Contents:
Malvern 1/3 page, typescript
They hope to send the G.L.Mk.III to Larkhill on 17th November; comments on this.

Harold [Hemming] to Lawrence Bragg  W.L. BRAGG/66A/299  11 Nov. 1943

Contents:
Larkhill ¾ page, typescript
Scarrott will do experiments on the Mortimer in November at Larkhill and hopes to go to the Front with it in December to do more experiments. Suggests dates for Bragg's visit. Does not think they will be working on the "Radar" at all. "Codar" is being done by the General Electric Co. General McNaughton has something he wants to hand over to them. Has not done anything yet about the coir matting.

H. [Hemming] to T.S.Littler  W.L. BRAGG/66A/300  16 Nov. 1943

Contents:
Larkhill 1/3 page, typescript
Lawrence Bragg suggested they experiment with coir matting as wind screening for sound ranging microphones. Asks if Littler could get them a roll of the matting.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/301  22 Nov. 1943

Contents:
1/3 page, typescript
Suggests dates for visit to Larkhill.

Harold Hemming to Lawrence Bragg  W.L. BRAGG/66A/302  25 Nov. 1943

Contents:
Larkhill 23 page, typescript
Comments on arrangements for trials of the Mortimer, the ADRDE model and models from Winch and GEC. Hopes Bragg can visit them then.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/303  15 Dec.1943

Contents:
Liverpool 23 page, typescript
Has been getting information from George Lewzey who is in hospital in Southport. Will ask Bill Taylor's views on the questionnaire he has sent to Lewzey. Comments on forthcoming visit of Carrie, Ross, McLeod and Hague from Canada.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/304  23 Dec. 1943

Contents:
1/3 page, typescript
Will be interested in seeing information from Lewzey and Taylor. Sends his good wishes to Carrie, Ross and Hague.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/305  3 Feb. 1944

Contents:
Liverpool 3 pages, typescript
Lewzey confirms necessity of further investigation into the linear microphone for recording shell wave; discusses this. Comments on need to have H.Q. in or near the microphone line. When mine fields are located between Headquarters and A.P.s, it is probably an advantage for the latter to be self-supporting comments on this. Will get reports on the aluminium boards and jigs. In spite of pessimistic meteor reports from A.D.R.D.E., good results were obtained. General accuracy of location is sufficiently good, but has not heard of a satisfactory ranging shoot. There was little activity at night in North Africa. Comments on the battery charging unit and on the G1098. Discusses the use of radio link in place of line communication. When the Second Front is being established, it may be very important to get the S.R. ashore and into action to start netralisation immediately; comments on this. Thinks the curved base will have to be used sooner or later. Is enclosing notes from Lewsey.
With notes discusseing sound ranging experiences in North Africa 5½ pages, typescript; W.L. BRAGG/66A/306

Ruth Balfour to Lawrence [Bragg]  W.L. BRAGG/66A/307  6 Feb. 1944

Contents:
Markinch 2 pages, MS
Comments on her son, John, who has returned to Britain. Would like John to visit Bragg at Cambridge; comments on this.

Harold Hemming to [Lawrence Bragg]  W.L. BRAGG/66A/308  12 Feb. 1944

Contents:
Larkhill ¾ page, typescript & MS
Enjoyed Bragg's broadcast. Mortimer Mk I failed. A Mk III has been made according to the Scarrott model; comments on this. Comments on Kemsley who has jointed them.

John Balfour to Lawrence [Bragg]  W.L. BRAGG/66A/309  14 Feb. 1944

Contents:
Dedham 1¼ pages, MS
For the past three years has been actively engaged in sound ranging. Would like to talk to Bragg about this work. Asks if he might come to Cambridge.

[Lawrence Bragg] to J.C.Balfour  W.L. BRAGG/66A/310  15 Feb. 1944

Contents:
1/3 page, typescript
Suggests Balfour telephone to arrange visit. Is looking forward to hearing about his experiences.

[Lawrence Bragg] to Ruth Balfour  W.L. BRAGG/66A/311  16 Feb. 1944

Contents:
¼ page, typescript
Thanks her for letter. Has written to her son to ask him to arrange visit.

[Lawrence Bragg] to Harold Hemming  W.L. BRAGG/66A/312  16 Feb. 1944

Contents:
1/3 page, typescript
Would like to come to Larkhill; comments on this. Taylor and Clews are coming to see him. Is hoping to arrange for Balfour to visit Cambridge to discuss his sound ranging experiences. Is keen to hear about the schemes for defeating German mortars. Pleased Hemming liked the broadcast.

[Lawrence Bragg] to A.H.Atkins  W.L. BRAGG/66A/313  22 Feb. 1944

Contents:
1/3 page, typescript
Is going to visit Taylor and Clews at Canterbury in a fortnight's time and hopes to follow that with a visit to Larkhill. Showed Taylor Atkins' letter and notes. Had interesting account from Taylor of his examination of a German S.R. officer.

[Lawrence Bragg] to H.M.Patterson  W.L. BRAGG/66A/314  10 March 1944

Contents:
1/3 page, typescript
Visited Clews at Canterbury. Was sorry to miss Taylor. Was pleased to see Clews' and Taylor's work and thought they had made a thorough job of the preparation for ranging on the projectile. Would like to visit Canterbury again.

[Lawrence Bragg] to B.J.E.Schonland  W.L. BRAGG/66A/315  10 March 1944

Contents:
1/3 page, typescript
Comments on his visit to Canterbury to see the work of Taylor and Clews.

B.J.Schonland to Lawrence Bragg  W.L. BRAGG/66A/316  14 March 1944

Contents:
Roehampton ¼ page, typescript
Pleased Bragg was able to visit Canterbury. Would be delighted if Bragg kept in touch with the work being done there.

[Lawrence Bragg] to C.J.B.Clews  W.L. BRAGG/66A/317  16 March 1944

Contents:
½ page, typescript
Thanks Clews for graphs. Made trial of plotting the contour lines but convinced himself it was not a good idea; comments on this. Thinks something like the way Taylor and Clews had thought out of directing the light beams from squares was probably the best way of performing the analysis. Greatly enjoyed visit and was very impressed by the work. Schonland had promised he will continue to be involved with Clews' work.

John A.Leigh to [Lawrence] Bragg  W.L. BRAGG/66A/318  28 March 1944

Contents:
School of Artillery 2 pages, MS
Is enclosing copy of sound ranging pamphlet which Bragg vetted; discusses this. Invites Bragg to visit.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/319  30 May 1944

Contents:
Canterbury ½ page, typescript
Has just returned from America and has a lot of interesting material he would like Bragg to see. Invites Bragg to visit. J.P.Maxfield, Director of the Duke University Sound Ranging Development Establishment is to visit him at the end of the week; suggests Bragg come at the same time.

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66A/320  31 May 1944

Contents:
1/3 page, typescript
Suggests date for visit. Sorry he cannot come earlier; he would have liked to have seen Maxfield.

[Lawrence Bragg] to J.P.Maxfield  W.L. BRAGG/66A/321  7 June 1944

Contents:
1/3 page, typescript
Sorry he was not able to see Maxfield again. Pleased Maxfield was able to visit Cambridge. Comments on the dry paper recorder.

[Lawrence Bragg] to J.A.Leigh  W.L. BRAGG/66A/322  7 June 1944

Contents:
½ page, typescript
Would like to visit Salisbury Plain; suggests dates. Had interesting day with Professor Maxfield hearing about the American sound ranging experiments.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/323  19 June 1944

Contents:
Canterbury ¼ page, typescript
Is enclosing account by Murgatroyd of the method they are using to work out the "Whipple" results.
With report: Draft report on methods of upper air investigation by anomalous sound recording; 3¾ pages, duplicated W.L. BRAGG/66A/324

Sound Ranging  W.L. BRAGG/66A/325  20 June 1944

Contents:
323 pages, duplicated
Notes of an informal discussion held at Berkeley Court on 14th June 1944 on the termination of Dr Maxfield's visit to the United Kingdom.

[Lawrence Bragg] to [N.F.] Mott  W.L. BRAGG/66A/326  22 June 1944

Contents:
1 page, typescript
Would like to consult Mott about a computing job. Discusses P.W.E.Taylor's method of deducing gun position from the shell wave. Will need about 150 sets of graphs based on known range tables of the German guns and need quick way of doing these. Asks if Mott can help.

N.F.Mott to Lawrence Bragg  W.L. BRAGG/66A/327  29 June 1944

Contents:
Armament Research Dept., Fort Halstead ¼ page, typescript
Acknowledges letter. Has had official letter from A.5 asking for advice on the matter. Can probably do what is needed if trajectories exist for German guns. If only range table data exist, the trajectories would have to be calculated which would be a big job.

A.H.Atkins to Lawrence Bragg  W.L. BRAGG/66A/328  3 July 1944

Contents:
Liverpool ¾ page, typescript & MS
Delighted to hear of good reports about sound ranging. Wonders whether Scarrett has solved the mortar location problem. Need separate units for mortar location; comments on this. Pleased Clews has settled down with A.D.R.D.E.; comments on this. Hemming has suggested he visit Larkhill but thinks he is not sufficiently in touch with matters to be of use.

[Lawrence Bragg] to O.M.Solandt  W.L. BRAGG/66A/329  7 Aug. 1944

Contents:
3¼ pages, typescript
Refers to meeting with Clews, Taylor and Ewer. Problem in producing a quick answer to location of the source from the lower shellwave, or line of fire from upper shell wave, is primarily film reading and, secondarily, setting up the results on the plotting board. Discusses method of plotting the trajectory from the upper shell wave by means of beams of light from centres of the squares. Comments on advantages of synchronous running of the recorders; running films slower; problem of picking out right set of breaks at one point and so initiating the reading process and the advantages of using a vertical base; "cribs" which Taylor and Clews are preparing; possible use of a Dodar. Was very impressed by the work which Taylor and Clews have done.

[Lawrence Bragg] to O.M.Solandt  W.L. BRAGG/66A/330  20 Sept. 1944

Contents:
1½ pages, typescript
Refers to visit to Canterbury. Hopes to go again next week. In trying to trace back the trajectory from the sound records, use has not been made of the angle at which the shell-wave leaves the trajectory; discusses this and Taylor's plan to try out the idea. Comments on method of making wind and temperature corrections and his suggestion that they plot the corrections to azimuth and elevation on a chart of the microphone positions. Comments on progress of work on the speed of the recorders and on method of setting the light pointers. Very impressed by the work Taylor and Clews are doing

O.M.Solandt to Lawrence Bragg  W.L. BRAGG/66A/331  26 Sept. 1944

Contents:
Roehampton 23 page, typescript
Acknowledges letter. Taylor and Ewer have made considerable headway with Bragg's suggestions. Thanks Bragg for his help.

[Lawrence Bragg] to J.A.Leigh  W.L. BRAGG/66A/332  2 Dec. 1944

Contents:
½ page, typescript
Is enclosing fierce letter from Blamey. Thinks Clews and Murgatroyd are the best people to give a judicious set of instructions for wind corrections. Very impressed by the work Taylor and Clews have done; registration worked like clockwork for the first missile which arrived.

Harold Hemming to [Lawrence] Bragg  W.L. BRAGG/66A/333  6 Dec. 1944

Contents:
Larkhill 1¼ pages, typescript
Comments on visit to Italy, North Africa, Egypt, Palestine, India and Burma. His wife and children are in Southampton; comments on this.

John A.Leigh to [Lawrence] Bragg  W.L. BRAGG/66A/334  7 Dec. 1944

Contents:
[Larkhill] 3 pages, MS
Thanks Bragg for letter and enclosure. Discusses the handbook on wind and temperature graphs. Would welcome Bragg's comments on the meteorological appendix to the sound ranging pamphlet. Would like to see Bragg again. They are busier than ever. [Hemming] appears to have enjoyed his trip. He will be leaving [Larkhill] in a few weeks.

[Lawrence Bragg] to H.Hemming  W.L. BRAGG/66A/335  8 Dec. 1944

Contents:
¾ page, typescript
Acknowledges letter. Comments on the work of Taylor and Clews at Canterbury. had letter from Blamey about meteor corrections; sent it on to Leigh.

P.W.E.Taylor to Lawrence [Bragg]  W.L. BRAGG/66A/336  27 Jan. 194[5]

Contents:
2 pages, MS
Is enclosing notes on the prism; discusses this. Wilson thought it would take him a couple of years to catch up in mathematical physics and said many were already working in the field. They are looking forward to seeing Bragg in March.
With notes: The single prism light: best position for pivoting axle; 27 Jan.1945; 4 pages, duplicated, W.L. BRAGG/66A/337; With five diagrams/graphs; W.L. BRAGG/66A/338-342

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66A/343  3 Feb. 1945

Contents:
23 page, typescript
Everything is in order regarding the prism. Sutton checked Taylor's construction and agrees it works accurately within the necessary limits; comments on this. Comments on his proposed visit to "Northern Europe" and asks Taylor to contact Yeaxlee about his, Bragg's, programme.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66A/344  26 Feb. 1945

Contents:
½ page, typescript
Has arranged for Bragg to spend the first three days of his visit with them. Col. White is arranging for Bragg to stay in Brussels; comments on this. Comments on the prism.

[Lawrence Bragg] to [C.D.] Ellis  W.L. BRAGG/66A/345  13 March 1945

Contents:
¾ page, typescript
Is going to Belgium as one of the lecturers appointed by the Central Advisory Council of the War Office; comments on this. Taylor invited him to Belgium to see their set-up for V2 location, so is spending the first three days of his visit with Taylor. Asks if Ellis has any commissions for him.

C.D.Ellis to Lawrence Bragg  W.L. BRAGG/66A/346  16 March 1945

Contents:
War Office 23 page, typescript
Interested to learn that Bragg is to see the sound ranging set up in Belgium. Some points concerned with the upper atmosphere have an importance beyond the present operations. Has no special points to raise. Would like to discuss the future development of the work when Bragg returns.

John R.Merton to Lawrence Bragg  W.L. BRAGG/66A/347  19 March 1945

Contents:
Larkhill ¼ page, typescript
Is enclosing report of his visit to South East Asia Command.

P.W.E.Taylor to Lawrence [Bragg]  W.L. BRAGG/66A/348  3 April 1945

Contents:
11/3 pages, BLA MS
Will call on Errera; will be interested to hear Belgian ideas on sound ranging. Enjoyed Bragg's visit and would like him to come again; comments on this. Dr Snow is making arrangements for him at Cambridge. Asks Bragg if he would speak to Snow.

[Lawrence Bragg] to J.R.Merton  W.L. BRAGG/66A/349  17 April 1945

Contents:
1/3 page, typescript
Thanks Merton for report. Had interesting visit to the sound rangers in Belgium. Has not visited Larkhill for a long time.

[Lawrence Bragg] to [C.D.] Sutton  W.L. BRAGG/66A/350  19 April 1945

Contents:
23 page, typescript
Had interesting time with Taylor. Sutton's apparatus arrived and Taylor was very pleased with it. Discusses the few small points in the apparatus [sound ranging recorder] which are still giving trouble.

[Lawrence Bragg] to C.D.Ellis  W.L. BRAGG/66A/351  24 April 1945

Contents:
3 pages, typescript
Had interesting visit to Taylor's H.Q. for the location of V2s, a sound ranging battery's H.Q. and a recorder station for locating mortars. Discusses the organisation of rocket location. Comments on apparatus made by the Cambridge Instrument Co. for plotting trajectories of rockets. Discusses work on the location of V2 by sound. Comments on the success of sound ranging in the war and on the failure of the radio link. There are still a few smallproblems with the sound ranging recorder; comments on this. Comments on the progress of work on mortar location. Would like to have a talk with Ellis; suggests date for meeting. Refers to talks he gave in Belgium.

Cambridge Instrument Co.Ltd (C.D.Sutton) to Lawrence Bragg  W.L. BRAGG/66A/352  24 April 1945

Contents:
1¼ pages, typescript
Pleased the apparatus arrived safely. Pleased the recorders are giving good service. Comments on problem of film jumping and on the time motors.

C.D.Ellis to Lawrence Bragg  W.L. BRAGG/66A/353  28 April 1945

Contents:
War Office 1¼ pages, typescript
Thanks Bragg for informative letter about visit to Belgium. Remarkable achievement the way the first rocket that came over was detected. Confirmed with Brooks that a proper write-up of the operation must be done; comments on this and on the contribution of Taylor and Clews. Apparatus will be stored and they are planning to use sound ranging techniques in peace time for research into a high level meteor. Should be no difficulty in pursuing developments of the radio link. Hopes they can meet to discuss things soon.

Sound Ranging  W.L. BRAGG/66A/354  6 May 1945

Contents:
1 page, typescript
The use of V2 rockets for investigations of the upper atmosphere.

[Lawrence Bragg] to Alwyn Crow  W.L. BRAGG/66A/355  14 May 1945

Contents:
23 page, typescript
Understands Ratcliffe has talked to Crow about use of V2 rockets for getting information about atmosphere at heights of 50 to 60 miles. Comments on this and supports Ratcliffe's request that the [Cavendish] Laboratory should be given opportunity to take part in any such experiments. Comments on his work as Scientific Advisor on the location of V2 projectiles by sound and on C.D.Ellis's wish to keep up the high altitude meteor work in peace time.

C.W. Oatley to Lawrence [Bragg]  W.L. BRAGG/66A/356  20 May 1945

Contents:
Cambridge 1 page, MS
Further to their talk about sound ranging and radio link problems, thinks Bragg should send report to Major Hague, who was largely responsible for the design of the radio link.

A.Crow to Lawrence Bragg  W.L. BRAGG/66A/357  4 June 1945

Contents:
Ministry of Supply 33 page, typescript
They hope to stage some experiments with V2 rockets during the next few weeks; comments on this and suggests Ratcliffe get in touch with Wheeler around 15th June. Will keep Bragg in touch with their plans and ensure the Cavendish Laboratory can collaborate in any programme of trials.

[Lawrence Bragg] to J.A.Ratcliffe  W.L. BRAGG/66A/358  7 June 1945

Contents:
1/3 page, typescript
Crow says they hope to do some experiments with V2 rockets during the next few weeks. Comments on this and asks Ratcliffe to contact Wheeler.

[Lawrence Bragg] to Alwyn Crow  W.L. BRAGG/66A/359  7 June 1945

Contents:
¼ page, typescript
Thanks Crow for letter. Is passing on the information to Ratcliffe, who will be interested to know there is a possibility of his sending up some of his gear in the rockets in future.

[Lawrence Bragg] to O.M.Solandt  W.L. BRAGG/66A/360  7 June 1945

Contents:
1/3 page, typescript
Is enclosing report of his visit to Belgium and Holland. Comments on desirability of making direct contact with the makers of apparatus and the officers in the field. Oatley thought Hague should see the report.

[Lawrence Bragg]  W.L. BRAGG/66A/361  [ca. June 1945]

Contents:
4 pages, MS
Notes about sound ranging work and on peace-time developments.

O.M.Solandt to Lawrence Bragg  W.L. BRAGG/66A/362  23 June 1945

Contents:
Roehampton ¼ page, typescript
Sorry he could not attend meeting. Discussed his views fully with Tanner and is sure Tanner represented them very well.

L.E.Bayliss to Lawrence Bragg  W.L. BRAGG/66A/363  4 July 1945

Contents:
Roehampton 1¾ pages, typescript
Comments on his discussions with Col. Paterson about steps to ensure proper development of sound ranging the adequate assimilation of recent operational experience, referring to plan to hold an informal discussion on sound ranging. Invites Bragg to chair this discussion on 12th July. Is returning report on tour of Belgium and Holland.
With notice about discussion meeting; 4 July 1945; 23 page, duplicated; W.L. BRAGG/66A/364

C.J.B.Clews to Lawrence Bragg  W.L. BRAGG/66A/365  11 July 1945

Contents:
¼ page, typescript
Is enclosing reports for information. Asks Bragg to return these

L.E.Bayliss to Lawrence Bragg  W.L. BRAGG/66A/366  12 July 1945

Contents:
Roehampton ½ page, typescript
Notice of conversazione to be held on 27 July at which work of the A.O.R.G. will be demonstrated.

[Lawrence Bragg] to L.E.Bayliss  W.L. BRAGG/66A/367  17 July 1945

Contents:
¼ page, typescript
Regrets he may not be able to come to the conversazione. Is informing members of staff, who were engaged on Ministry of Supply work, about the conversazione.

[Lawrence Bragg] to C.J.B.Clews  W.L. BRAGG/66A/368  23 July 1945

Contents:
1/3 page, typescript
Thanks Clews for interesting reports on analysis of sounds from guns; comments on reports, which he is returning.

[?H.Hemming to Lawrence Bragg]  W.L. BRAGG/66A/369  n.d

Contents:
4 pages, MS; [part of letter]
Discusses report in New York Tribune of lecture by Trowbridge about American contribution to sound ranging work and Trowbridge's anger at the misrepresentation of his views. Comments on Allingham.

Sound ranging: reports, correspondence and minutes  W.L. BRAGG/66B  1946

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66B/1  1 Jan. 1946

Contents:
Larkhill 1¼ pages, typescript
Would like to show Bragg their flash spotting recorder. Suggests Bragg visit to discuss the development work being done there on flash spotting and sound ranging; discusses this and asks Bragg to suggest date. Is enclosing draft agenda. Outlines objects of the meeting. Is enclosing notes Harold Hemming made on his visit to America.
With enclosures: 1.) Draft agenda; ½ page, typescript; W.L. BRAGG/66B/2
2.) Report on liaison visit by H.H.Hemming to the United States and Canada, Sept. and Oct. 1945; Larkhill, 29 Oct. 1945; 281/3 pages, duplicated; W.L. BRAGG/66B/3

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66B/4  3 Jan. 1946

Contents:
½ page, typescript
Thanks Taylor for invitation to visit Larkhill. Could come on 22nd January and have the meeting on the 23rd; discusses this.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66B/5  9 Jan. 1946

Contents:
Larkhill ½ page, typescript
January 23rd will be admirable for meeting. Comments on travel arrangements. Is enclosing copy of letter and agenda which has been sent to experimental establishments and Ministry of Supply branches.
With enclosures: 1.) Letter from P.W.E.Taylor, 8 Jan.1946, giving details of arrangements for meeting on 23 January; 2 pages, duplicated; W.L. BRAGG/66B/6
2.) Agenda; ¾ page, duplicated; W.L. BRAGG/66B/7.

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66B/8  17 Jan. 1946

Contents:
1/3 page, typescript
Is ill with 'flu and may not be able to come to Larkhill on 22nd; comments on this. If he cannot come, perhaps they might arrange a meeting with the key men to discuss programme.

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66B/9  23 Jan. 1946

Contents:
1/3 page, typescript
Letter of 17 Jan. must have gone astray. Had proposed a later meeting. Was very disappointed not to be able to come to Larkhill.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66B/10  25 Jan. 1946

Contents:
Larkhill 23 page, typescript
Sorry Bragg was unable to come to meeting. Ministry of Supply is considering having a "visitor" for S.R.D.E.'s sound ranging activities and Bragg may be approached. Hopes he will be able to accept the office. Would be pleased if Bragg could come to a meeting in London. The meeting on Wednesday went very well.

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66B/11  28 Jan. 1946

Contents:
½ page, typescript
Clews asked him about being a visitor. Should like to have a continuing link with Survey but could only do the job if the calls on his time were light; comments on this. Unlikely to be able to get to Larkhill in February but is often in London and could come to a meeting there.

[Lawrence Bragg] to P.W.E.Taylor  W.L. BRAGG/66B/12  14 March 1946

Contents:
1/3 page, typescript
Asks Taylor about the results of the January meeting. Was particularly sorry to miss the discussion of future plans. Asks about Taylor's own plans for the future.

P.W.E.Taylor to Lawrence Bragg  W.L. BRAGG/66B/13  21 March 1946

Contents:
London 8½ pages, MS
Sorry Bragg could not come to the January meeting at Larkhill. ".. mad revolutionary ideas were produced thick and fast" but few of those attending had any great knowledge of the subject. Little was produced in the way of future plans. Comments on Butement's attempts to get a sound ranging "visitor" appointed. Discusses Marriott, who is a great acquisition. Thinks there will be stagnation in sound ranging research and development. Comments on importance of appointing a visitor. Reviews the present position of sound ranging and flash spotting and their future utility. Discusses equipment and the desirability of replacing men with machines. Comments on the problem of communications and the unsatisfactory nature of the existing lines and radio link. He has been demobilised and Brighty is his successor at Larkhill. Simpson is in charge of sound ranging. Almost nobody who was at Larkhill during the war is left. Tony Bellamy is practically the only link. Comments on his own plans to read for the Bar, referring to his wish at one time to change to physics. Would like to call on Bragg when he visits Cambridge.

Field Survey Association  W.L. BRAGG/66B/14  Sept. 1946

Contents:
War Office 3 pages, duplicated Newsletter.

B.B.C.: Correspondence about "The nature of things"  W.L. BRAGG/67A  1959-1960

B.B.C. (Norma P.Guise) to R.King  W.L. BRAGG/67A/1  6 July 1959

Contents:
½ page, typescript copy
Discusses arrangements for the provision of ampexing facilities for programme [on The Nature of Things].

B.B.C. (Norma P.Guise) to Lawrence Bragg  W.L. BRAGG/67A/2  27 June 1960

Contents:
London ¼ page, typescript
Is enclosing list of billings for repeat series of The Nature of Things.
With enclosure: 1½ pages, typescript; W.L. BRAGG/67A/3.

[Miss D.Hutchinson], Sec. to Lawrence Bragg, to Philip Daly, B.B.C.  W.L. BRAGG/67A/4  27 Sept. 1960

Contents:
[Royal Institution] 1/3 page, typescript
Sir Lawrence has not received repeat fee for the first of the programmes in the series, The Nature of Things. Comments on this and asks why payment has not been made.

B.B.C. (B.R.Edwards) to Miss D.Hutchinson  W.L. BRAGG/67A/5  30 Sept. 1960

Contents:
Broadcasting House, ½ page, London typed
Discusses repeat fee due to Sir Lawrence Bragg in connection with the series, The Nature of Things, and the misunderstanding which arose concerning this.

[Miss D.Hutchinson], Sec. to Lawrence Bragg, to B.R.Edwards, B.B.C.  W.L. BRAGG/67A/6  3 Oct. 1960

Contents:
[Royal Institution] ¼ page, typescript
Acknowledges receipt of letter and of fee for repeat programme in the series, The Nature of Things.

B.B.C. (Philip Daly) to Diana Hutchinson, Sec. to Lawrence Bragg  W.L. BRAGG/67A/7  4 Oct. 1960

Contents:
Wood Lane, London ½ page, typescript
Apologises for confusion over payment of fee for first programme in the series, The Nature of Things; comments on this.

[Diana Hutchinson], Sec. to Lawrence Bragg, to Philip Daly, B.B.C.  W.L. BRAGG/67A/8  5 Oct. 1960

Contents:
[Royal Institution] ¼ page, typescript
Acknowledges letter of 4 October. Thanks Daly for clearing up question of the repeat fee for first programme in the series, The Nature of Things.

Lawrence Bragg  W.L. BRAGG/67A/9  [1959]

Contents:
80 pages, typescript & MS
Notes on experiments and scripts for the B.B.C. television programmes The Nature of Things.

B.B.C. Television  W.L. BRAGG/67A/10  [1959]

Contents:
16 pages, printed
Science on Saturday. Notes on a series of scientific programmes to be broadcast on Saturday mornings, including series by Sir Lawrence Bragg on The Nature of Things.

[B.B.C.]  W.L. BRAGG/67A/11  [1959]

Contents:
4¼ pages, duplicated
Report on audience reaction to Lawrence Bragg's series of programmes, The Nature of Things.

Fan letters to Lawrence Bragg in connection with the television series The Nature of Things; with replies.  W.L. BRAGG/67B  11 November 1959 - 23 August 1965

127 letters

Contents:
Typescript & MS

Letter from Andrew Gentleman, Denny, 11 Nov.1959, asking about meteorites; with reply, 20 Nov.1959.  W.L. BRAGG/67B/1-2  [n.d.]

Letter from R.J.Armstrong, Upper Colwall, 12 Nov.1959, asking about the contraction of rope and cork.  W.L. BRAGG/67B/3  [n.d.]

Letter from R.S.Woodhouse, Nottingham, 12 Nov.1959; with reply, 31 Dec., and further letter from Woodhouse, 5 Jan.1960. About theory of relativity.  W.L. BRAGG/67B/4-6  [n.d.]

Letter from Michael A.Schat, Barrow in Furness, 12 Nov.1959; with reply, 20 Nov.1959.  W.L. BRAGG/67B/7-8  [n.d.]

Letter from R.L.Wain, Wye College, 13 Nov.1959.  W.L. BRAGG/67B/9  [n.d.]

Letter from G.W.Burt, Hemingbrough, 14 Nov.1959, asking for explanation of why ice is less dense than water; with reply, 18 Nov.1959  W.L. BRAGG/67B/10-11  [n.d.]

Letter from Fred Hill, Watford, 14 Nov.1959.  W.L. BRAGG/67B/12  [n.d.]

Letter from A.G.Steer, Blackheath, 14 Nov.1959, asking about source of bubbles in fermented liquor; with reply 20 Nov.1959.  W.L. BRAGG/67B/13-14  [n.d.]

Letter from Lucy [-?-], Cambridge, 16 Nov.1959.  W.L. BRAGG/67B/15  [n.d.]

Letter from Bragg to W.Harrison, 16 Nov.1959, about Brownian movement; with reply, 17 Nov.1959.  W.L. BRAGG/67B/16-17  [n.d.]

Letter from G.T.M.Healey, Overton-on-Dee, 17 Nov.1959, asking about meteorites; with reply, 20 Nov.1959.  W.L. BRAGG/67B/18-19  [n.d.]

Letter from Bragg to W.Sheard, 18 Nov.1959, thanking for letter.  W.L. BRAGG/67B/20  [n.d.]

Letter from Phyllis Coleman, Windsor, 18 Nov.1959; with reply, 19 Nov.  W.L. BRAGG/67B/21-22  [n.d.]

Letter from P.A.Barker, Forgandenny, 18 Nov.1959; with reply, 20 Nov.1959  W.L. BRAGG/67B/23-24  [n.d.]

Letter from C.W.D.Johnson, Chadwell Heath, 19 Nov.1959; with copy of Fathom, 1956, and reply, 29 Dec.1959.  W.L. BRAGG/67B/25-27  [n.d.]

Letter from H.Sanderson, South Ruislip, 25 Nov.1959, asking about meteorites; with reply, 6 Jan.1960.  W.L. BRAGG/67B/28-29  [n.d.]

Letter from Christine Arnold, Ealing Green, 25 Nov.1959, asking about Brownian movement; with reply, 26 Nov.1959.  W.L. BRAGG/67B/30-31  [n.d.]

Letter from W.C.Kimber, London, 26 Nov.1959, about an oil heavier than water; with reply, 2 Dec.1959.  W.L. BRAGG/67B/32-33  [n.d.]

Letter from J.W.Osgood, Kingsbury, 26 Nov.1959, about an oil heavier than water; with reply, 9 Dec.1959.  W.L. BRAGG/67B/34-35  [n.d.]

Letter from James Isaacs, Pilton West, [Nov.1959], asking about elasticity with reply, 27 Nov.1959.  W.L. BRAGG/67B/36-37  [n.d.]

Letter from Miss D.Porter, Broxbourne, 27 Nov.1959, asking if WLB is related to Helena Mary Bragg; with reply, 8 Dec.1959.  W.L. BRAGG/67B/38-39  [n.d.]

Letter from T.A.Stuttard, Manchester, with WLB, 27 Nov-11 Dec.1959, about the elmination of oil by the application of detergent.  W.L. BRAGG/67B/40-42  [n.d.]

Letter from C.J.Cattanach, St.Albans, 28 Nov.1959, about lubrication; with reply, 8 Jan.1960  W.L. BRAGG/67B/43-44  [n.d.]

Letter from J.J.Blake, Bishop's Stortford, 30 Nov.1959, about surface tension; with reply, 2 Dec.1959.  W.L. BRAGG/67B/45-46  [n.d.]

Letter from John Hilton, Ingatestone, 1 Dec.1959, about surface tension; with reply, 9 Dec.1959.  W.L. BRAGG/67B/47-48  [n.d.]

Letter from Michael R.Prince, Arkley, with WLB and WLB with Geoffrey Taylor 3 Dec.1959-4 Jan.1960, about the rotation of water around a waste pipe.  W.L. BRAGG/67B/49-53  [n.d.]

Letter from E.S.Whittaker, Todmorden, 4 Dec.1959, sending sample of plastic with reply, 15 Dec.1959.  W.L. BRAGG/67B/54-55  [n.d.]

Letter from W.Tate, Gledhow, 4 Dec.1959, asking about magnetism; with reply, 15 Dec.1959.  W.L. BRAGG/67B/56-57  [n.d.]

Letter from Ian Hartley, Chorlton-cum-Hardy, 5 Dec.1959, asking about magnification; forwarded to Bragg by Philip Daly, B.B.C., 11 Dec.1959; with reply, 15 Dec.1959.  W.L. BRAGG/67B/58-60  [n.d.]

Letter from W.Fletcher Shaw, Manchester, 5 Dec.1959; with reply, 7 Dec.  W.L. BRAGG/67B/61-62  [n.d.]

Letter from Dorothy Moir, Chelsea, [Dec.1959]; with reply, 7 Dec.1959.  W.L. BRAGG/67B/63-64  [n.d.]

Letter from W.K.Stewart, Farnborough, 7 Dec.1959.  W.L. BRAGG/67B/65  [n.d.]

Letter from Allan Adair, Tavistock, 11 Dec.1959; with reply, 17 Dec.  W.L. BRAGG/67B/66-67  [n.d.]

Letter from Sheila Akers, Frenchay, 11 Dec.1959.  W.L. BRAGG/67B/68  [n.d.]

Letter from Valerie Temple Savage, Woking, 13 Dec.1959; with reply, 14 Jan.1960.  W.L. BRAGG/67B/69-70  [n.d.]

Letter from J.H.Brown, Ripon, 14 Dec.1959, asking about meteorites; with reply, 30 Dec.1959.  W.L. BRAGG/67B/71-72  [n.d.]

Letter from E.Race, Blackburn, 14 Dec.1959, about heat resisting material; with reply, 18 Dec.1959.  W.L. BRAGG/67B/73-74  [n.d.]

Letter from S.E.Waits, Bristol, 15 Dec.1959.  W.L. BRAGG/67B/75  [n.d.]

Letter from John Walker, Battersea, 16 Dec.1959; with reply, 17 Dec.1959.  W.L. BRAGG/67B/76-77  [n.d.]

Letter from Mrs H.Langford-Reed, Hampstead, 17 Dec.1959.  W.L. BRAGG/67B/78  [n.d.]

Letter from Anne Lodge, Nottingham, 17 Dec.1959.  W.L. BRAGG/67B/79  [n.d.]

Letter from Margaret Davidson, Glasgow, 17 Dec.1959.  W.L. BRAGG/67B/80  [n.d.]

Letter from Louly & Stanford Robinson, London, 17 Dec.1959; with reply, 23 Dec.1959.  W.L. BRAGG/67B/81-82  [n.d.]

Letter from H.T.Hughes, London, with Bragg, 17 Dec.1959 to 18 Jan.1960, about flame resistant plastic.  W.L. BRAGG/67B/83-86  [n.d.]

Letter from H.J.Woodliff, Cambridge, with Bragg and C.W.Bunn, 18 Dec.1959 to 6 Jan.1960, about a rubber substitute which is inert chemically.  W.L. BRAGG/67B/87-92  [n.d.]

Letter from Mair Patterson, Wilmslow, 20 Dec.1959; with reply, 8 Jan.1960.  W.L. BRAGG/67B/93-94  [n.d.]

Letter from P.S.Allgood, London, with Bragg, 24 Dec.1959-1 Jan.1960, asking about detergents.  W.L. BRAGG/67B/95-97  [n.d.]

Letter from B.F.J.Schonland, Harwell, 30 Dec.1959.  W.L. BRAGG/67B/98  [n.d.]

Letter from Peter Lennox-Kerr, Manchester, 30 Dec.1959, about flame resistant fibre; with reply, 31 Dec.1959.  W.L. BRAGG/67B/99-100  [n.d.]

Letter from A.Adair, Bovey Tracey, 31 Dec.1959, about science talks.  W.L. BRAGG/67B/101  [n.d.]

Letter from Bragg to F.P.Bowden, 31 Dec.1959, asking for help with reply to letter.  W.L. BRAGG/67B/102  [n.d.]

Letter from C.J.Cattanach, St.Albans, 9 Jan.1960, thanking for information.  W.L. BRAGG/67B/103  [n.d.]

Letter from Ian Jacob, Woodbridge, 10 Jan.1960; with reply, 11 Jan.1960.  W.L. BRAGG/67B/104-5  [n.d.]

Letter from Harry [-?-], 1 Feb.1960; with reply, 4 Feb.1960.  W.L. BRAGG/67B/106-7  [n.d.]

Letter from Bragg to J.W.S.Brown, 9 May 1960, about indestructible fibre; with letter of thanks, 10 May 1960.  W.L. BRAGG/67B/108-9  [n.d.]

Letter from Christopher House, Romford, 3 July 1960, about magnetism; with reply, 4 July 1960.  W.L. BRAGG/67B/110-11  [n.d.]

Letter from Linda Taylor, Liverpool, 19 July 1960. About liquefaction of sand; with reply, 26 July 1960.  W.L. BRAGG/67B/112-13  [n.d.]

Letter from A.Dolan, Stafford, 13 Aug.1960, about Atlantis; with reply, 18 Aug.1960.  W.L. BRAGG/67B/114-15  [n.d.]

Letter from Bragg's Secretary to Mrs E.Johnston, 18 Aug.1960, about the length of the programme.  W.L. BRAGG/67B/116  [n.d.]

Letter from P.G.L.de Morpurgo, Wye, 21 Sept.1960; with reply from Secretary, 27 Sept.1960, and from WLB, 22 Nov.1960.  W.L. BRAGG/67B/117-19  [n.d.]

Letter from P.P.Gastelaars, Hamilton, Australia, 13 Dec.1961, about fireproof plastic; with reply, 1 Feb.1962.  W.L. BRAGG/67B/120-21  [n.d.]

Letter from R.W.Thompson, Hornsey, with WLB and WLB with the B.B.C., 8-23 Aug.1965, about the series, The Nature of Things, which was broadcast in Australia.  W.L. BRAGG/67B/122-25  [n.d.]

Letter from Sylvia A.Whitehead, Leeds, undated.  W.L. BRAGG/67B/126  [n.d.]

Letter from Alice M.Terry; undated.  W.L. BRAGG/67B/127  [n.d.]

Understanding Science correspondence about the magazine  W.L. BRAGG/67C  1962-1968

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/1  12 April 1962

Contents:
Gt Missenden 2 pages, typescript
The Junior Science Encyclopaedia, for which Bragg wrote foreword, is being translated into Spanish, French and Italian. Is sending proof of a new weekly magazine which aims to familiarize young people with elementary science. Discusses the magazine [Understanding Science]. Asks if Bragg would join the Consultant Editorial Board.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/2  7 May 1962

Contents:
Gt Missenden 1¼ pages, typescript
Apologises for having interrupted Bragg's work. Had not planned to publish the first issue of Understanding Science for some months but the publisher insisted on immediate production; comments on this and on the aims of the magazine. Perhaps Bragg would consider joining the Consultant Editorial Board later.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/3  21 May 1962

Contents:
Gt Missenden ½ page, typescript
Is sending the first two issues of Understanding Science.

Lynne Coates to Lawrence Bragg  W.L. BRAGG/67C/4  [August 1962]

Contents:
1¾ pages, MS
Thanks Bragg for letting her read (Understanding Science); comments on the magazine.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/5  16 Aug. 1962

Contents:
½ page, typescript
Is enclosing copy of notes on Understanding Science by a "young friend". Wishes the magazine success. Would be pleased to join the Consultant Editorial Board.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/6  17 Aug. 1962

Contents:
Gt.Missenden 23 page, typescript
Delighted Bragg feels able to joing the Consultant Editorial Board for Understanding Science.

[Lawrence Bragg] to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/7  11 Sept.1962

Contents:
1/3 page, typescript
Acknowledges letter of 17 August.

Sampson Low, Marston & Co.Ltd (F.V.Broadribb) to Lawrence Bragg  W.L. BRAGG/67C/8  2 May 1963

Contents:
Gt Missenden 1/3 page, typescript
Is enclosing cheque for honorarium.

Lawrence Bragg to F.V.Broadribb, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/9  6 May 1963

Contents:
1/3 page, typescript
Acknowledges receipt of letter and cheque.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/10  1 May 1963

Contents:
Gt Missenden 1¼ pages, typescript
Comments on the progress made by Understanding Science. Thanks Bragg for his encouragement. Hopes Bragg will continue on the Consultant Editorial Board. The original Editor, Leslie Basford, has had to move to Lancashire and give up the Editorship. New Editor is Philip Kogan; comments on Kogan.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/11  6 May 1963

Contents:
½ page, typescript
Appreciates his connection with Understanding Science. Thinks the publication is giving young people what it set out to do.

Lawrence Bragg to Philip Kogan, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/12  30 Oct 1963

Contents:
1 page, typescript
Thinks Understanding Science is being planned on the right lines. Comments on the use of illustrations. Comments on the R.I.'s Schools Lectures and invites Kogan's people to attend some.

Sampson Low,Marston & Co.Ltd (Philip Kogan) to Lawrence Bragg  W.L. BRAGG/67C/13  13 Nov 1963

Contents:
Gt Missenden 23 page, typescript
Thanks Bragg for his encouraging comments. Will be pleased to attend R.I. Schools Lectures. In addition to their teenage readership, they have a large number of adult readers.

Charles H.Gibbs-Smith to Lawrence Bragg  W.L. BRAGG/67C/14  2 Dec. 1963

Contents:
Victoria & Albert Museum 1 page, typescript
Is enclosing copy of letter to Understanding Science. The article has no value as a summary. Such an article shakes one's faith in all the other contributions.
With enclosure: W.L. BRAGG/67C/15
Charles H.Gibbs-Smith to the Editor, Understanding Science, 2 Dec.1963 Draws attention to errors in article on early aircraft. Sad that such an excellent publication does not employ professional historians to write, or at least vet, the text. He is worried that, if he can find serious mistakes and confusion of essentials in his area of specialisation, many other accounts may be inaccurate.

Lawrence Bragg to C.H.Gibbs-Smith  W.L. BRAGG/67C/16  4 Dec. 1963

Contents:
½ page, typescript
Thanks Gibbs-Smith for letter. Will take it up with the Editor of Understanding Science when he gets back from India. Has had reports of other articles in which bad mistakes have been made. Thinks many of the articles are good for young people.

Lawrence Bragg to Philip Kogan  W.L. BRAGG/67C/17  4 Dec. 1963

Contents:
½ page, typescript
Mr Gibbs-Smith has sent him copy of letter he sent to Kogan about article on the aeroplane. Has had a few reports of articles in which bad mistakes have been made. Most of the articles are very good. Would like to take up the matter with Kogan when he returns from India

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/18  13 Dec. 1963

Contents:
Gt Missenden 1¼ pages, typescript
Concerned that there were errors in the article on aviation. Thanks Bragg for letting him have Charles Gibbs-Smith's constructive notes on this. Comments on procedure for vetting articles for Understanding Science. Thinks they are usually successful in "evading the pitfalls of simplification". Are overhauling the vetting system. Thanks Bragg for his constructive interest in the magazine.

Secretary to Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/19  16 Dec. 1963

Contents:
1/3 page, typescript
Acknowledges letter of 13 December. Will bring it to Sir Lawrence's attention when he returns from India.

William Henry Bragg  W.L. BRAGG/67C/20  ca. 1964

Contents:
1¼ pages, typescript
Article about W.H.Bragg's crystallographic work.

Sampson Low, Marston & Co.Ltd (Philip Kogan) to Lawrence Bragg  W.L. BRAGG/67C/21  24 July 1964

Contents:
Gt Missenden 1 page, typescript
Thanks Bragg for dealing with the "Famous Scientist" article so promptly. Article was written in the early days of Understanding Science but was held over until diffraction and other relevant subjects hade been covered. Article did not go through the normal processes a newly commissioned article would have done. Sorry the errors were of such personal concern to Bragg.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/22  6 Aug. 1964

Contents:
Gt Missenden 11/3 pages, typescript
The weekly part-work Understanding Science was originally planned to reach completion in two years. There had been continued interest, particularly by adult readers, in going on a little beyond the basic elementary field. Have decided to continue for about another year, ending with issue 144. Hopes Bragg will remain on the Consultant Board for the remaining life of the publication; comments on this. The work has commenced publication in Spanish; comments on this. Apologises for the mix-up in the article about Bragg's father.

Corinne Condon, Sec. to Lawrence Bragg, to David White, Sampson Low  W.L. BRAGG/67C/23  13 Aug. 1964

Contents:
1/3 page, typescript
Acknowledges receipt of letter and cheque.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/24  22 Sept. 1964

Contents:
½ page, typescript
Acknowledges letter of 6 August. Has been on holiday. Would like to check copies of Understanding Science for errors. Is sure the publication is doing a great deal to arouse the interest of the young

Sampson Low, Marston & Co. Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/25  24 Sept. 1964

Contents:
Gt Missenden 23 page, typescript
Delighted Bragg will continue with Understanding Science. It would be helpful to have a note of errors spotted by Bragg's colleagues; comments on this.
MS note added [by Corinne Condon]: Understanding Science coming to end, being replaced by New Knowledge.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Brag  W.L. BRAGG/67C/26  15 Feb. 1965

Contents:
Gt Missenden 2¼ pages, typescript
Understanding Science has reached its conclusion. Thanks Bragg for his help and interest. Material from the magazine is being adapted for direct educational use; discusses this. A special students' edition is being issued. Comments on plans to re-publish some of the material from Understanding Science in the form of a paperback book. This science library would ideally be published under the guidance of the Consultant Editorial Board; comments on this and asks if Bragg would continue to serve on Board. Lists provisional titles of the first books planned.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/27  24 Feb. 1965

Contents:
1 page, typescript
Thanks White for letter and for honorarium. Interested in plans for re-publishing material from Understanding Science. Comments on large number of mistakes he has found in articles. Admires the illustrations and some articles are excellent. It would be a pity if the mistakes discredited the volumes as, in general, it is an attractive venture which he admires. Would like to go over the book with White and his expert.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/28  1 March 1965

Contents:
Gt Missenden 1 page, typescript
Thanks Bragg for his help with Understanding Science. Would appreciate an opportunity to go over the mistakes with Bragg. Mistakes are inexcusable but are all too easy to make; comments on this.

Corinne Condon, Sec to Lawrence Bragg, to David White, Sampson Low  W.L. BRAGG/67C/29  2 March 1965

Contents:
1/3 page, typescript
Asks if it would be convenient for him to come to see Sir Lawrence on 9th March.

Lawrence Bragg to George Thomson  W.L. BRAGG/67C/30  1 March 1965

Contents:
½ page, typescript
Has had some correspondence about Understanding Science. Was worried that there were so many mistakes in the articles. Magazine has finished, but it is going to be made into some kind of encyclopaedia. Has told the Editor that he should go through the articles and correct the mistakes before re-publishing. Asks Thomson's views.

George Thomson to Lawrence Bragg  W.L. BRAGG/67C/31  4 March 1965

Contents:
Cambridge 1½ pages, MS
Thought Understanding Science was good, though as he did not read it in detail, he failed to notice errors. Comments on errors in New Knowledge, and on the organisation. Thinks it is worth going on with such publications. Hopes they can prevent the more serious errors.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/32  10 March 1965

Contents:
Gt Missenden 11/3 pages, typescript
Meeting with Bragg was most helpful. Has arranged for extra vetting of Understanding Science to be done by a number of school-masters. Pleased Bragg's lectures are to be filmed. If still photographs were taken as well, material would be available for illustrated book publication of the lectures as well; comments on this.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/33  11 March 1965

Contents:
½ page, typescript
Appreciates White's interest in lectures. Has tentative plans for writing up some of the material but it will have to wait until he has retired. Interested in plans for vetting articles. Hopes the publication goes well.

Knowledge Publications (Nevill Gambier) to Lawrence Bragg  W.L. BRAGG/67C/34  12 May 1965

Contents:
London ½ page, typescript
Has just learned that Bragg has not been receiving copies of New Knowledge. These are normally sent to advisory editors and he is sending a complete set.

Sampson Low, Marston & Co.Ltd (David W.Tyrrell) to Science Teachers  W.L. BRAGG/67C/35  1965/66

Contents:
Gt Missenden 1 page, duplicated
They have re-edited and re-assembled material from Understanding Science into a series of books, Foundations of Science. Discusses this.
With brochure: Foundations of Science; printed. W.L. BRAGG/67C/36

Corinne Condon to Lawrence Bragg  W.L. BRAGG/67C/37  20 June 1966

Contents:
¼ page, typescript
Foundations of Science are the books prepared from material contained in Understanding Science.

C.B.Spurgin to Lawrence Bragg  W.L. BRAGG/67C/38  16 June 1966

Contents:
1 page, MS
Wonders whether Bragg has seen the diffraction grating diagram in [Foundations of Science]. Does not imagine that Bragg has seen, let alone approved, the diagram.
With typescript copy of letter: W.L. BRAGG/67C/39

Lawrence Bragg to C.B.Spurgin  W.L. BRAGG/67C/40  23 June 1966

Contents:
23 page, typescript
Thanks Spurgin for letter. Was appalled by the illustration to which Spurgin drew his attention. Comments on mistakes which appeared in Understanding Science. Thinks most, if not all, the errors he spotted were corrected in Foundations of Science. He was not consulted when Foundations of Science was compiled, so missed the "appalling picture".

Lawrence Bragg to D.W.Tyrrell, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/41  23 June 1966

Contents:
½ page, typescript
Is enclosing copy of letter from [C.B.Spurgin], Senior Science Master at Wolverhampton Grammar School. He is right: the illustration showing the formation of a spectrum by a grating "is a howler of the first magnitude". Cannot believe it would have passed a conscientious referee with a knowledge of physics. Detracts from the value of the publication when science masters can make such justifiable comments.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/42  24 June 1966

Contents:
Gt Missenden 1¼ pages, typescript
Thanks Bragg for letter enclosing criticism from Mr Spurgin; comments on this. Has instructed printers not to proceed until the picture has been replaced. Has written to ask Mr Spurgin for his detailed criticism of the whole article. Comments on the Foundations of Science. Will send Bragg copies. Thanks Bragg for his interest.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/43  28 June 1966

Contents:
23 page, typescript
Acknowledges letter. Easy for the occasional mistake to slip through. Sometimes happens because the artist, who does not understand the scientific principles involved, makes an alteration for artistic effect which entirely changes the picture scientifically. Would like to give what help he can. Is retiring from the Royal Institution but could give some help from the beginning of October.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/44  1 July 1966

Contents:
Gt Missenden ¾ page, typescript
Thanks Bragg for letter. Mr Spurgin has sent detailed new instructions for the artist. Comments on Bragg's retirement from the Royal Institution. Would be delighted to have Bragg's help with the publication in October.

Lawrence Bragg to David White, Sampson Low, Marston & Co. Ltd  W.L. BRAGG/67C/45  4 July 1966

Contents:
1/3 page, typescript
Thanks White for letter. Will look forward to discussion in October.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/46  18 Nov. 1966

Contents:
Gt Missenden 1 page, typescript
Suggests Bragg has a meeting with him and Walter Parrish of Macdonalds to discuss some ideas. They would like to suggest book publication of Bragg's lectures and a series of highly illustrated monographs on certain aspects of physics. Asks Bragg to suggest dates for meeting.

Lawrence Bragg to David White, Sampson Low, Marston & Co.Ltd  W.L. BRAGG/67C/47  2 Dec. 1966

Contents:
½ page, typescript
Will be very busy until next July; comments on this. Had meant to have a thorough review of Understanding Science, but will have to defer this until his return from USA at the end of February.

Sampson Low, Marston & Co.Ltd (David White) to Lawrence Bragg  W.L. BRAGG/67C/48  8 Dec. 1966

Contents:
Gt Missenden 1/3 page, typescript
Pleased to leave discussions until Bragg's return from America. Hopes he has an enjoyable trip.

Sampson Low, Marston & Co.Ltd (Victor Broadribb) to Lawrence Bragg  W.L. BRAGG/67C/49  21 Sept. 1967

Contents:
London ¼ page, typescript
Apologises for opening enclosed letter in error.

Corinne Wakefield, Sec. to Lawrence Bragg, to Sampson Low, Marston & Co.  W.L. BRAGG/67C/50  26 Sept. 1967

Contents:
1/3 page, typescript
Thanks them for sending on letter addressed to Bragg. The subject is not connected with Bragg's work. Bragg suggests that someone who know the field should be asked to reply.

Lawrence Bragg to David White, Sampson Low, Marston & Co. Ltd  W.L. BRAGG/67C/51  4 Dec. 1968

Contents:
23 page, typescript
Has been looking up their correspondence about Understanding Science. Imagines there is no more help he can give. If there is no question of re-publication, then there is no more to be done. Has given his set of the publications to his grandchildren, who appreciate them enormously. If he does not hear from White, will assume there is nothing further to be done.
MS note added: nothing more heard, 7 Feb.1969.

Understanding Science  W.L. BRAGG/67C/52-65  1962-1965

Contents:
14 items, printed
Covers of issues 7-12, 16, 18-23, and complete magazine, no.144, 1965.

London International Youth Science Fortnight and the London Science Club: correspondence.  W.L. BRAGG/67D  10 February 1964 to 3 May 1968

99 items

Contents:
Lawrence Bragg with George McGowan and Philip S.Green of the London International Youth Science Fortnight and with officers of the London Science Club.
Typescript, MS, printed & duplicated

McGowan to Bragg, 10 Feb.1964: comments on plan to start Science Club on 20 March; invites Bragg to give address at inaugural meeting.  W.L. BRAGG/67D/1  [n.d.]

Green to Bragg, 17 Feb.1964, inviting Bragg to become a Vice-President of the Science Fortnight.  W.L. BRAGG/67D/2  [n.d.]

Bragg to Green, 19 Feb.1964, accepting invitation.  W.L. BRAGG/67D/3  [n.d.]

Bragg to McGowan, 21 Feb.1964, accepting invitation to give short inaugural talk.  W.L. BRAGG/67D/4  [n.d.]

McGowan to Bragg, 24 Feb.1964: delighted Bragg will become a Vice-President of the Science Fortnight.  W.L. BRAGG/67D/5  [n.d.]

Corinne Condon to Green, 11 March 1964, asking for details of arrangements for inaugural meeting of Science Club.  W.L. BRAGG/67D/6  [n.d.]

Green to Bragg, 12 March 1964: discusses the Young Scientists Club and arrangements for the inaugural meeting on 20 March.  W.L. BRAGG/67D/7  [n.d.]

Bragg to Green, 13 March 1964, thanking for information.  W.L. BRAGG/67D/8  [n.d.]

Notes by Bragg for address to Club.  W.L. BRAGG/67D/9  [n.d.]

McGowan to Bragg, 23 March 1964, thanking Bragg for attending inaugural meeting of London Science Club and commenting on Club.  W.L. BRAGG/67D/10  [n.d.]

Green to Bragg, 3 April 1964: thanks Bragg for the inspiration and guidance he gave to the Club. Russian friends went to the wrong address.  W.L. BRAGG/67D/11  [n.d.]

Bragg to Norman Wright, British Association, 6 April 1964: comments on the London Science Club.  W.L. BRAGG/67D/12  [n.d.]

Digby Jacks to Bragg, 20 July 1964: comments on progress made by the London Science Club. Committee would like to visit Bragg.  W.L. BRAGG/67D/13  [n.d.]

Bragg to Jacks, 23 July 1964: pleased Club is progressing well. Cannot meet Committee until October.  W.L. BRAGG/67D/14  [n.d.]

Corinne Condon to Jacks, 11 Sept.1964: Bragg will be pleased to see Committee on 16 September.  W.L. BRAGG/67D/15  [n.d.]

Jacks to Bragg, 20 Sept.1964: thanks Bragg for seeing Committee and for tour of laboratories. Honoured that Bragg has agreed to become President of the Club for the coming year.  W.L. BRAGG/67D/16  [n.d.]

Christopher Kennard, 1 Oct.1964: circular letter giving information about the London Science Club.  W.L. BRAGG/67D/17  [n.d.]

Manifesto of the London Science Club, Sept. 1964.  W.L. BRAGG/67D/18  [n.d.]

London Science Club: programme, Oct.1964-April 1965.  W.L. BRAGG/67D/19  [n.d.]

Digby Jacks to Bragg, 4 Oct.1964: is enclosing information about the Club. Comments on restricted size of meeting place. Discusses plan to inform 6th Form pupils about the Club.  W.L. BRAGG/67D/20  [n.d.]

Corinne Condon to Jacks, 9 Oct 1964: is enclosing lecture list. Asks him to let her know how many of committee wish to attend schools lectures.  W.L. BRAGG/67D/21  [n.d.]

Jacks to Bragg, 15 Oct.1964: would like to announce Science Club at schools lectures on 24th and 25th November. Three committee members would like to attend.  W.L. BRAGG/67D/22  [n.d.]

Bragg to Jacks, 20 Oct.1964: will be pleased to make announcement about Science Club at his lectures. Has noted that three people wish to attend on each occasion.  W.L. BRAGG/67D/23  [n.d.]

Jacks to Bragg, 28 Nov.1964: thanks Bragg for help. There were 110 students at Professor Bondi's lecture.  W.L. BRAGG/67D/24  [n.d.]

Jacks to Bragg, 4 Jan. [...] 1964[5] discusses arrangements for AGM and comments on growth in membership.  W.L. BRAGG/67D/25  [n.d.]

Agenda for AGM of the London Science Club, 26 Feb.1965.  W.L. BRAGG/67D/26  [n.d.]

Draft constitution for London Science Club, Jan. 1965.  W.L. BRAGG/67D/27  [n.d.]

Corinne Condon to Jacks, 11 Jan.1965: Bragg regrets he cannot attend AGM and hopes the meeting will be successful.  W.L. BRAGG/67D/28  [n.d.]

Corinne Condon to Jacks, 28 Jan.1965: Bragg will make announcements about the Science Club at his four lectures in March.  W.L. BRAGG/67D/29  [n.d.]

K.N.Williams to Bragg, 20 April 1965: thanks Bragg for allowing them to advertise the London Science Club during his lectures. Comments on recent activities of the Club. Discusses rocket project which the Club plans to run.  W.L. BRAGG/67D/30  [n.d.]

Corinne Condon to Williams, 29 April 1965: Bragg was interested in the Club's activities but has no comments on proposed experiments as they are outside his usual field.  W.L. BRAGG/67D/31  [n.d.]

Corinne Condon to Jacks, 22 June 1965: Bragg is ill and unable to keep appointment on 6 July.  W.L. BRAGG/67D/32  [n.d.]

Report on 7th London International Youth Science Fortnight, 28 July to 11 August 1965.  W.L. BRAGG/67D/33  [n.d.]

K.N.Williams to Bragg, 30 Aug. 1965: invites Bragg to attend AGM of London Science Club and asks if he will continue as President.  W.L. BRAGG/67D/34  [n.d.]

Corinne Condon to Peter A.C.Ward, 3 Sept.1965: Bragg is away until 27 September, so will not be able to attend AGM. Will find out whether he wishes to continue as President.  W.L. BRAGG/67D/35  [n.d.]

Bragg to Ward, 15 Sept.1965: retires from the R.I. next year. They may wish to have a President "on the active list". Is willing to go on but suggests they consider appointing someone else.  W.L. BRAGG/67D/36  [n.d.]

John Cockcroft to Lawrence Bragg, 19 Oct.1965: hopes Bragg will agree to take over from him the Presidency of the Youth Science Fortnight; comments on this.  W.L. BRAGG/67D/37  [n.d.]

Philip S.Green to Bragg, 27 Oct.1965: pleased Bragg is considering accepting the Presidency of the Science Fortnight. Comments on arrangements for the Fortnight.  W.L. BRAGG/67D/38  [n.d.]

Bragg to P.S.Green, 28 Oct.1965: will look forward to being President of the Youth Science Fortnight.  W.L. BRAGG/67D/39  [n.d.]

Green to Bragg, 2 Nov.1965: delighted Bragg has accepted Presidence  W.L. BRAGG/67D/40  [n.d.]

Green to Bragg, 15 Nov.1965: John H.Ling, Chairman of the London Science Club, has asked him to urge Bragg to remain as their President for at least another year; comments on this.  W.L. BRAGG/67D/41  [n.d.]

Programme for International Youth Science Fortnight, 27 July to 10 August 1966.  W.L. BRAGG/67D/42  [n.d.]

Green to Corinne Condon, 24 Nov.1965, enclosing draft of letters they want Bragg to sign for Youth Science Fortnight.  W.L. BRAGG/67D/43  [n.d.]

Draft of letter about Youth Science Fortnight.  W.L. BRAGG/67D/44  [n.d.]

UNESCO (G.E.A.Lardner) to Green, 16 Nov.1965: discusses Science Fortnight and possibility of British Association's assisting in organisation of something similar on an experimental basis. If prospects are promising, will consider an experiment in both East and West Africa.  W.L. BRAGG/67D/45  [n.d.]

Green to Lardner, 29 Nov.1965: acknowledges letter. They have been invited to apply for inclusion in Unesco's System of Associated Youth Enterprises. Asks if Unesco will be able to send participant to the Science Fortnight; comments on this.  W.L. BRAGG/67D/46  [n.d.]

International Youth Science Fortnight, July/August 1966: brochure.  W.L. BRAGG/67D/47  [n.d.]

Corinne Condon to Green, 26 Nov.1965: Bragg will be pleased to sig the letters. Bragg will wbe pleased to remain President of the London Science Club for another year.  W.L. BRAGG/67D/48  [n.d.]

J.H.Ling to Bragg, 2 Dec.1965: thanks Bragg for agreeing to continue as President of the London Science Club.  W.L. BRAGG/67D/49  [n.d.]

Bragg to Green, 7 Dec.1965: gives Green permission to put up display board during the Christmas Lectures.  W.L. BRAGG/67D/50  [n.d.]

Green to Corinne Condon, 10 Dec.1965: Shell has offered to give party for Vice Presidents, Advisory Committee and officers of the London Science Club on 18, 19 or 20 January. Asks if Sir Lawrence and Lady Bragg would accept invitation on one of these dates.  W.L. BRAGG/67D/51  [n.d.]

Green to Corinne Condon, 21 Dec.1965: pleased Bragg is able to come on 18 January comments on arrangements for meeting and party.  W.L. BRAGG/67D/52  [n.d.]

Green to Bragg, 3 Jan.1966: comments on address given by Lord Snow at Opening Ceremony of 1965 Youth Science Fortnight. Snow is not able to give 1966 address. Suggests Nevill Mott be invited to give address; discusses this. Alternatively, Professor Blackett or Lord Florey might be asked. The 1966 Fortnight will not have a central theme.  W.L. BRAGG/67D/53  [n.d.]

Bragg to Green, 6 Jan.1966: Mott, Blackett or Florey would be a good choice; comments on this. Other good speakers are Sir John Baker and Sir Willis Jackson. However, the best people are very busy and have so many engagements.  W.L. BRAGG/67D/54  [n.d.]

Green to Bragg, 19 Jan.1966: Bragg agreed to write to President of the Royal Naval College on lines of draft submitted by Sir Peter Runge. Is enclosing draft.  W.L. BRAGG/67D/55  [n.d.]

Draft letter to Rear Admiral P.A.Bayly, commenting on the Youth Science Fortnight and asking if he would allow them to hold a dance in the Painted Hall of the Royal Naval College, Greenwich, on the last evening, 9th August.  W.L. BRAGG/67D/56  [n.d.]

Bragg to Bayly, 24 Jan.1966: as 56.  W.L. BRAGG/67D/57  [n.d.]

Bragg to Bayly, 2 Feb.1966: thanks him for letter. Quite understands reasons which makes it impossible for them to use the Painted Hall.  W.L. BRAGG/67D/58  [n.d.]

Janet K.L.Harper to Bragg, 2 Feb.1966: is enclosing latest issue of Orbit, the magazine of the London Science Club.  W.L. BRAGG/67D/59  [n.d.]

Orbit, 1966  W.L. BRAGG/67D/60  [n.d.]

Bragg to Janet Harper, 17 Feb.1966: thanks for copy of magazine. Is too busy to contribute to it at present.  W.L. BRAGG/67D/61  [n.d.]

Philip S.Green to Bragg, 14 March 1966: asks Bragg, as president, to provide message for the Souvenir Programme of the International Youth Science Fortnight.  W.L. BRAGG/67D/62  [n.d.]

Bragg to Green, 17 March 1966: is enclosing message and photograph  W.L. BRAGG/67D/63  [n.d.]

Bragg: message for Souvenir Programme.  W.L. BRAGG/67D/64  [n.d.]

George McGowan to Bragg, 21 March 1966: thanks Bragg for message and photographs.  W.L. BRAGG/67D/65  [n.d.]

Programme for Youth Science Fortnight, 27 July-10 August 1966.  W.L. BRAGG/67D/66  [n.d.]

Green to Bragg, 21 June 1966: he and McGowan would like to call to discuss Opening Ceremony and Bragg's lecture. Comments on Opening Ceremony.  W.L. BRAGG/67D/67  [n.d.]

Revised Programme for Youth Science Fortnight, 1966.  W.L. BRAGG/67D/68  [n.d.]

Green to Bragg, 12 July 1966: gives details of arrangements for Opening Ceremony and for Bragg's lecture.  W.L. BRAGG/67D/69  [n.d.]

Bragg: notes for lecture.  W.L. BRAGG/67D/70  [n.d.]

Green to Bragg, 15 July 1966: Bragg said he would sign message for the European Science Tour. Is enclosing draft.  W.L. BRAGG/67D/71  [n.d.]

Draft message to Science Fortnight Conference in Berlin.  W.L. BRAGG/67D/72  [n.d.]

Copy of 72, 18 July 1966  W.L. BRAGG/67D/73  [n.d.]

Green to Bragg, 21 July 1966: gives notes on members of the platform party at the Opening Ceremony of the Science Fortnight.  W.L. BRAGG/67D/74  [n.d.]

Plan of platform party, 21 July 1966.  W.L. BRAGG/67D/75  [n.d.]

Invitation to Opening Ceremony of the Science Fortnigh, 28 July 1966.  W.L. BRAGG/67D/76  [n.d.]

Duke of Edinburgh, August 1966: message to the Science Fortnight.  W.L. BRAGG/67D/77  [n.d.]

Souvenir programme for Youth Science Fortnight, August 1966.  W.L. BRAGG/67D/78  [n.d.]

Youth Science Fortnight: Director's newsletter: P.S.Green, 6 Dec.6 [...]   W.L. BRAGG/67D/79  [n.d.]

London Science Club (Trevor J.Havelock) to Bragg, 13 Oct.1966: invites Bragg to continue as President of the Club.  W.L. BRAGG/67D/80  [n.d.]

Bragg to Havelock, 14 Oct. 1966: will not be able to do much for the Club in the coming year as he has a long lecture tour in America, but is willing to carry on as President.  W.L. BRAGG/67D/81  [n.d.]

Havelock to Bragg, 7 Dec.1966: thanks Bragg for agreeing to continue as President of the London Science Club. Asks if he would allow a representative of the Club to publicise it at the 6th Form lectures.  W.L. BRAGG/67D/82  [n.d.]

Bragg to Havelock, 13 Dec.1966: Havelock should make arrangements for publicising the Science Club with George Porter.  W.L. BRAGG/67D/83  [n.d.]

McGowan to Bragg, 6 March 1967: comments on arrangements for the Science Fortnight. Would be honoured if Bragg would again preside at the Opening Ceremony. Kathleen Lonsdale is to give the opening address.  W.L. BRAGG/67D/84  [n.d.]

Bragg to McGowan, 9 March 1967: regrets he cannot come to briefing on 11 April. Will be pleased to preside at Opening Ceremony.  W.L. BRAGG/67D/85  [n.d.]

McGowan to Bragg, 17 March 1967: delignted Bragg will preside at Opening Ceremony on 27 July.  W.L. BRAGG/67D/86  [n.d.]

McGowan to Bragg, 5 April 1967: asks Bragg to write message for the Science Fortnight programme. Comments on the programme.  W.L. BRAGG/67D/87  [n.d.]

Corinne Wakefield to McGowan, 12 April 1967: Bragg is preparing message for the programme and will send it in a few days.  W.L. BRAGG/67D/88  [n.d.]

Corinne wakefield to McGowan, 18 April 1967, enclosing message for programme.  W.L. BRAGG/67D/89  [n.d.]

Bragg: message for science Fortnight programme, 1967.  W.L. BRAGG/67D/90  [n.d.]

McGowan to Bragg, 11 July 1967: is enclosing copy of souvenir programme for the Youth Science Fortnight. Would like to call to discuss arrangements for the Opening Ceremony.  W.L. BRAGG/67D/91  [n.d.]

P.S.Green to Bragg, 9 Aug.1967: comments on William Lancelot Fleming, Bishop of Norwich, who is to take part in closing meeting of the Science Fortnight. Discusses organisation of meeting Gives notes for Bragg's remarks at meeting.  W.L. BRAGG/67D/92  [n.d.]

London Science Club (Andrew S.Bisset) to Bragg, 12 Aug.1967: invites Bragg to continue as President. Understands that, as he has retired, Bragg might not wish to accept. If so, would be grateful if he could suggest a successor. If he relinquishes the Presidency, would like him to accept honorary position of Vice-President.  W.L. BRAGG/67D/93  [n.d.]

Youth Science Fortnight, 1967: brochure.  W.L. BRAGG/67D/94  [n.d.]

George McGowan to Bragg, 3 April 1968: asks Bragg to write foreword for Science Fortnight Programme; comments on this. Hopes Bragg will preside at the Opening Ceremony again.  W.L. BRAGG/67D/95  [n.d.]

Programme for the Youth Science Fortnight, 31 July-14 Aug.1968.  W.L. BRAGG/67D/96  [n.d.]

McGowan to Bragg, 17 April 1968: understands why Bragg does not wish to continue as President of the Science Fortnight. Thanks Bragg for his help. Invites Bragg to become a Vice Patron.  W.L. BRAGG/67D/97  [n.d.]

Bragg to McGowan, 30 April 1968: should be honoured to be a Vice Patron of the Science Fortnight.  W.L. BRAGG/67D/98  [n.d.]

McGowan to Bragg, 3 May 1968: delighted that Bragg will accept Vice Patronage of the Youth Science Fortnight.  W.L. BRAGG/67D/99  [n.d.]

Overseas Visits: Portugal  W.L. BRAGG/68A  1945

Lawrence Bragg; Visit to Portugal  W.L. BRAGG/68A/1-94  14-27 November 1945

94 items

Contents:
Typescript, MS & printed
Includes correspondence, 26 March 1945 to 30 April 1949, concerning arrangements for his visit, lectures, ceremonies and reports, with the British Council, Cambridge University, H. Amorim Ferreira of the Ministry of Education, Lisbon, and J.A. Santos of the University of Coimbra. Other items include: Bragg's account of his visit (6¼ pages, typescript; with draft); texts of Bragg's speeches at Degree ceremony and dinner, Lisbon University, 21 Nov. 1945; translation of speech by the Minister of Education, Dr Caeiro da Mata, at the dinner on 21 Nov. 1945; synopses of Bragg's lectures (8 Oct.) on X-ray optics, Problems of the metallic state, and Scientific consequences of Röntgen's discovery of X-rays; text of lecture, Some problems of the metallic state (12½ pages, typescript); translation of interview with Bragg, 23 Nov. 1945, about atomic energy and the atomic bomb, published in O Primeiro de Janeiro; draft programmes for visit. With brochures, press cuttings, invitations, visiting cards and two photographs

Overseas Visits: South Africa  W.L. BRAGG/68B  1952

Lawrence Bragg; Visit to South Africa  W.L. BRAGG/68B/1-63  3 July to 3 August 1952

63 items

Contents:
Typescript, MS & printed
Includes correspondence concerning arrangements for his visit, printing of lectures, invitations from friends, and requests for scientific information, 14 January 1952-4 September 1953, with T. Alty of Rhodes University, Associated Scientific & Technical Societies of South Africa, N.F. Astbury, A.S. Baxter, J.B. Birks of Rhodes University, Manie Botha, British Association for the Advancement of Science, Cape Town University Commonwealth Relations Office, Raymond A. Dart of the University of Witwatersrand, English-Speaking Union, Ada M. Heath, T.S. Littler, Kathleen Murray, Mary Murray, Marian Ockleston, Royal Society, N. Sheppard, J.L.B. Smith of Rhodes University, South African Association for the Advancement of Science, South African Bureau of Standards, South African Council for Scientific & Industrial Research, W.H. Taylor. Other items include: biographical notes on Bragg, 19 June 1952; text of lecture, Current researches in the Cavendish Laboratory delivered 16 July (11½ pages, typescript); text of lecture, Bubble model of a metal structure, delivered 18 July 1952 (9¾ pages, typescript); notes by Bragg on his tour, 3 July to 3 August 1952; progress report of the Research School of Physics, Rhodes University, March 1953.

Overseas Visits: South Africa  W.L. BRAGG/68C  1955

Lawrence Bragg; Visit to South Africa (Cape Town & Johannesburg)  W.L. BRAGG/68C/1-107  1 September to 14 October 1955

107 items

Contents:
Typescript, MS & printed
Correspondence, January 1955 to 12 July 1956, concerning arrangements for his visit, lectures, broadcast and observations on birds, with: Edward Batson of University of Cape Town; Graham Blandy; G.J. Broekhuysen, about South African birds; T.B. Davie, University of Cape Town; [Rosalind] Franklin; Kate Graham-Murray; G. Hamlyn of the Students' Visiting Lecturers Fund Committee, Cape Town; James Gray about analysis of flight of the albatross; [Dorothy] Hodgkin; Geoffrey Hickson, about Alice Bragg's lectures; W.H.Hutt of the Visiting Lecturers' Committee, Cape Town; H.E.Huxley; Julian Huxley; Independent Cultural Association, Johannesburg; R.W.James, about programme and lectures at Cape Town; T.W. McAllen; E. Marais of the National Physical Laboratory, Pretoria; Kathleen Murray; Mary Murray; F.R.N. Nabarro and Margaret Nabarro, Witwatersrand University; Richard Paget; Royal Society of South Africa; E.J.Salisbury; G. Sargeant of Cape Town University; South African Broadcasting Corporation; W.H. Taylor, information about felspars for Cape Town; W.H. Thorpe, Cambridge, about recordings of South African chaffinches; Union-Castle Mail Steamship Co. Ltd; C.B. van Wyk of Orange Free State University (invitation to visit declined); P.G. de Vos, University of Stellenbosch; F. Walker of Cape Town; M.H.F. Wilkins, about loan of slides. Other items include text of Bragg's broadcast for the South African Broadcasting Corporation, Sept. 1955, booklet of Times articles on South Africa, Sept. 1955, photograph of Lady Bragg, menus, programmes, press cuttings.

Overseas Visits: Spain  W.L. BRAGG/68D  1933

Lawrence Bragg; Visit to Spain  W.L. BRAGG/68D/1-11  March-April 1933

11 items

Contents:
Typescript & MS
Correspondence concerning visits to Spain by J. West, from January 1933, and by Bragg and his wife, 1 November 1932 to 14 March 1933, with F. Cabrera and Julio Palacios of the Instituto Nacional de Fisica y Quimica, Madrid, Dollie Arris in Madrid, and with J. West while in Madrid. Includes notes, Jan. 1933, on the work of the X-ray group at the Instituto Nacional de Fisica y Quimica, Madrid.

Overseas visits: Spain  W.L. BRAGG/68E  1957

Lawrence Bragg; Visit to Spain  W.L. BRAGG/68E/1-15  September 1957

15 items

Contents:
MS, typescript & printed
Correspondence concerning arrangements for Bragg's holiday and souvenirs of his visit, 6 April 1957 to 1 November 1957, with: John Daly, London; Dorothy Garrod, Chamtoine par Villebois-Lavalette; Hotel Sexi, Almuñecar; Julio Palacios, Madrid; D.M.C. MacEwan, Granada. With text of lecture given by Sir John Balfour at Cordoba, 17 Oct., about Cordoba, brochures, addresses and maps.

Overseas visits: U.S.A. and Canada  W.L. BRAGG/69A  1948

Lawrence Bragg; Visit to U.S.A. and Canada  W.L. BRAGG/69A/1-333  23 October 1948 to 26 November 1948

333 items

Contents:
Typescript, MS & printed
Correspondence, 4 December 1947 to 21 March 1949, concerning arrangements for visits to Boston, Toronto, Rochester, Ann Arbor, Chicago, New York and Pittsburgh, lectures by Lawrence and Alice Bragg, General Electric Co. "Science Forum" broadcast, articles, research work seen, awards to Bragg (chiefly Roebling Medal of Mineralogical Society of America), and invitations form Universities and laboratories in U.S.A. and Canada to Bragg to visit. Correspondence with: Jerome Alexander, New York; American Chemical Society - Syracuse Branch (Frank A. Kanda); American Cyanamid Co., New York (N.A.Shepard); W.O. Baker, Bell Telephone Labs, Murray Hill; Barbizon Plaza Hotel, New York; Bell & Lunns Travel Service; Board of Trade, London; F.A. Bracey, London; Florence Brinkley, Duke University; British Joint Services Mission (Navy Staff), Washington (E.C.Wadlow); E.C. Bullard, Toronto; Dean Burk, National Cancer Institute, Bethesda; Chemical & Engineering News, Washington (R.L.Demmerle); John Chipman, Massachusetts Institute of Technology; Commonwealth Fund, New York (E.K.Wickman, Agnes G. Knapp & L.V. Hammond); Karl T. Compton, M.I.T.; J.M. Cork, Ann Arbor; P. Debye, Cornell University; Dept. of Scientific & Industrial Research, London; Dow Chemical Co., Midland, Michigan (L.K.Frevel); L.A. DuBridge California Institute of Technology; Jesse W.M. DuMond, [...] Californ Institute of Technology; E.I. Du Pont de Nemours & Co. (H.W. Rinehart); Eastman Kodak Co., Rochester; English-Speaking Union; A.W.G. Ewing, Manchester; K. Fajans, Ewell & Ann Arbor; I. Fankuchen, Polytechnic Institute of Brooklyn; Harry Fletcher, Bell Telephone; Carl F. Floe, M.I.T.; Foreign Office, London; V.D. Fréchette, Alfred University; General Electric Co., Schenectady (W.K. Mulvey); Geological Society of America (H.R.Aldrich & James Gilluly); N.S. Gingrich, University of Missouri; Howard Goodhart, New York; A.R. Gordon, Toronto; Neil E. Gordon, Wayne University; Mrs Henn; Harry A. Holland, Cambridge; Hotel New Weston, New York; Hotel Schenley, Pittsburgh; W.V. Houston, Rice Institute; [-?-] Heidenreich, Murray Hill; Mrs [-?-] Hutchison; M.L. Huggins, Rochester; H.J.C. Ireton, Toronto; Burton Kaplan, Rochester; M.J. Kelly, Bell Telephones, N.Y.; Paul F. Kerr, Columbia University; Harold P. Klug, Pittsburgh; Edward H. Kraus, University of Michigan, Ann Arbor; E.S. Larsen, Harvard University; Leeds University; Life Magazine (Nancy F. Genet); M.W. Lightner, Pittsburgh; R.B. Lindsay, Brown University; H.E. Longenecker, Pittsburgh; Henry Loomis, M.I.T.; K. Mees, Eastman Kodak, Rochester; W.O. Milligan, Houston; Mineralogical Society, London (W. Campbell Smith); Mineralogical Society of America (C.S. Hurlbut); A.C.G. Mitchell, Indiana University; A. Morrison, Ottawa; W.A. Noyes, University of Rochester; M.A. Peacock, University of Toronto; P.B. Pearson, Agricultural & Mechanical College of Texas; George B. Pegram, Columbia University; R. Pepinsky, Alabama Polytechnic Institute; I.I. Rabi, Columbia University; K.B. Rapp, New York; D.P. Riley, London; R. Rollefson, University of Wisconsin; Helen Rush, Cathedral of Learning, Pittsburgh; Mrs Schaffner, Chicago; F.H. Scott, Pittsburgh; A.G. Shenstone, Princeton; Alexander Silverman, University of Pittsburgh; C.S. Smith, Chicago; Lloyd P. Smith, Cornell University; N.R. Thielke, Pennsylvania State College; George Tunell, Pacific Palisades; United Kingdom Scientific Mission, Washington; B.E. Warren, M.I.T.; Washington Chemical Society (Dean Burk); Washington Philosophical Society (T.J. Carroll); W.W. Watson, Yale University; Robert L. Weber, Pennsylvania State College; Robley C. Williams, Ann Arbor; Henry M. Woodburn, University of Buffalo; C.S. Wright, Washington; W.H. Zachariasen, University of Chicago. Other items include Bragg's notes on research seen during his tour, programmes and notice of lecture in Pittsburgh, 22 November 1948.

Pverseas visits: U.S.A.  W.L. BRAGG/69B  1950

Lawrence Bragg; Visit to U.S.A.  W.L. BRAGG/69B/1-89  7 October to 18 October 1950

89 items

Contents:
Typescript, MS, printed & duplicated
Correspondence, 2 May 1950 to 20 December 1950, concerning arrangements for visits to New York, Schenectady (General Electric Co. Laboratories), Pocono Manor, Boston; notes about lectures, meeting of the National Academy of Sciences at Schenectady, 50th anniversary of the founding of the G.E.C. Research Laboratories, conference on Imperfections & grain boundaries in crystals at Pocono Manor, interviews. Correspondence with: L.H. Adams, Carnegie Institution of Washington; Bell & Lunns Travel Service; V. Bush, Carnegie Institution of Washington; Cambridge University; Chemical & Engineering News, Washington (M.L.Kastens); Morris Cohen, Massachusetts Institute of Technology; Rebekah Cohn, Cohasset; W.D. Coolidge, G.E.C., Schenectady; John T. Edsall, Harvard University; P.P. Ewald, Polytechnic Institute of Brooklyn; R.C. Gibbs, National Research Council, Washington; N.T. Gordon, G.E.C., Schenectady; R.G. Haynes, International G.E.C. of New York Ltd, London; National Provincial Bank, Cambridge; James K. Roros, Columbia University; B.R. Sankey, International General Electric Co. of New York Ltd, London; W. Shockley, Bell Telephone Labs, Murray Hill; John C. Slater, M.I.T.; C.J. Suits, G.E.C., Schenectady; W.R. Whitney, G.E.C., Schenectady. Other items include: Bragg's diary of visit (4¼ pages, typescript); notes on points for speech at Schenectady; programmes for tour and for conferences; figures relating to papers given at crystallography conference; notes and brochures about the General Electric Company and its 50th anniversary celebrations; newspaper cuttings.

Overseas visits: U.S.A. (proposed)  W.L. BRAGG/69C  1963-1966

Lawrence Bragg  W.L. BRAGG/69C/1-28  5 March 1963 to 14 March 1966

28 items

Contents:
Correspondence, concerning invitations to U.S.A., lecture schemes and programmes under which overseas visits can be arranged.
Typescript, MS, printed & duplicated
Correspondence with
A. Goldbaum, New York, 5 March - 9 Sept. 1963, about "exporting" Christmas lectures; W.L. BRAGG/69C/1-3
Jane E. McAllister, Jackson State College, 29 March - 7 May 1963, about programme of lectures transmitted over long distance telephone; W.L. BRAGG/69C/4-7
V.D. Fréchette, New York State University, 28 June - 17 July 1963, about work on ceramics and invitation to Bragg to visit; Alice Halliday, Pittsburg, 11 July - 20 July 1963, about W.L. BRAGG/69C/8-9 Christmas lectures for students; W.L. BRAGG/69C/10-12
American Institute of Physics (Elmer Hutchisson), New York, 17 July - 27 Sept. 1963, about Visiting Scientists programme and invitation to Bragg to participate in scheme; W.L. BRAGG/69C/13-19
Visiting Scientists Program in Physics (Serge Korff), New York, 18 - 25 September 1963, inviting Bragg to participate; W.L. BRAGG/69C/20-21 American Crystallographic Association, October 1965 about meetings; W.L. BRAGG/69C/22-24
Royal Society (H.W.Thompson), London, 28 Feb.- 14 March 1966, about Overseas Visiting Professorships. W.L. BRAGG/69C/25-28

Overseas visits: U.S.A. and Canada  W.L. BRAGG/69D  1966-1967

Lawrence Bragg; Visit to U.S.A. and Canada  W.L. BRAGG/69D/1-102  19 December 1966 - 22 February 1967

102 items

Contents:
Typescript, MS & printed
Correspondence, 13 October 1965 - 22 June 1967, concerning arrangements for visits to Ottawa, Baltimore, Boston, Buffalo, Washington, Harvard, Yale, Philadelphia, Murray Hill, Atlanta, New York, Tucson, invitations to visit other places in U.S.A., arrangements for grandson to accompany the Braggs to Ottawa, lectures. Correspondence with: American Academy of Arts & Sciences, Boston (Paul A. Freund & Jennifer Adams); American Association for the Advancement of Science, Washington (Dael Wolfle); American Crystallographic Association (W.F.Bradley, William L. Kehl, Harold G. Smith); American Physical Society (Karl K. Darrow); W.O. Baker, Murray Hill; Bell Telephone Labs, Murray Hill (Elizabeth A. Wood); Detlev W. Bronk, New York; Doris Cattell, Polytechnic Institute of Brooklyn (about "history of science" mural); English-Speaking Union, New York; Franklin Institute, Philadelphia (W.L. LePage, Robert W. Neathery, M.A. Pomerantz, Lillian H. Falgie, Diana Stambul); Newell S. Gingrich, University of Missouri; R.O. Grisdale, Short Hills; Harcourt, Brace & World Inc, New York (Jerold Alderman) - request for figure of lines of force; David Harker, Buffalo; Hickie Borman Grant & Co. Ltd, London; Edward W. Hughes, California Institute of Technology; Mervin J. Kelly, Short Hills; Daniel J. Kelves, California Institute of Technology (about sound ranging); Eugene H. Kone, New York; Joseph Kraut, La Jolla; Schuyler W. Lininger, Tucson; William N. Lipscomb, Harvard; L. Marton, Washington; Dan McLachlan, Ohio State University; J.C. Morrow, University of North Carolina; W. Albert Noyes, Austin; H. Steffan Peiser, Washington; Robert L. Platzman, University of Chicago; Roberto J. Poljak, Johns Hopkins University; B. Post, Polytechnic Institute of Brooklyn; Derek J. de Solla Price, Yale; Frederic M. Richards, Yale; J.A. Rupley, University of Arizona; John A. Schellman, University of Oregon; B.F. Skinner, Harvard; R.A. Smith, Massachusetts Institute of Technology; Fred M. Snell, Buffalo; Gunther S. Stent, Berkeley; Washington Philosophical Society (Herbert Hauptman & Lewis Slack); Bertram E. Watson, M.I.T.; J.D. Watson, Harvard; Ralph W.G. Wyckoff, University of Arizona; R.A. Young, Georgia Institute of Technology (about tape recording of Bragg). Other items include: itineraries; lists of talks; notes on the Philosophical Society of Washington; W.N. Lipscomb et al., The structure of carboxypeptidase A. III., J. Molecular Biology, 1966, 19 423-441; Dan McLachlan, Atomic radii in metals, Zeitschrift fur Kristallographie, 1963, 119, 139-147; brochure about course for Doctorate in chemistry at University of California, La Joll

Overseas visits: Australia  W.L. BRAGG/69E  1960

Lawrence Bragg; Visit to Australia  W.L. BRAGG/69E  2 October 1960 - 16 November 1960

144 items

Contents:
Typescript, MS & printed
Correspondence, 30 April 1959 - 17 December 1962, concerning arrangements for visits to Sydney, Armidale, Brisbane, Canberra Melbourne, Hobart, Adelaide; lectures given during tour, including Einstein Memorial Lecture to Institute of Physics, Adelaide; election of Bragg as Honorary Member of the Royal Society of New South Wales; papers; visit of Mark Oliphant to Britain to the Royal Society's Tercentenary celebrations. Correspondence with: Miss E.L. Allen, University of Queensland; C. Barker, Waldringfield; Henry Basten, University of Adelaide; British Council, Sydney (N.F.Williams); Commonwealth Club of Adelaide; C.J. Connell, University of Queensland; E.J. Drake, Australian Scientific Liaison Office, London; East West Airlines Ltd, Tamworth (Norman V. Buchanan); G.R.A. Ellis, C.S.I.R.O., Camden; English-Speaking Union, Adelaide (N.F. Hopkins); Alice Fisher, Mount Lofty; R.D.Bruce Fraser, C.S.I.R. Parkville; Gemmological Association of Australia, Darlinghurst (H.R.Millard); Gemmological Association of Great Britain (G.F. Andrews); Guy B. Gresford, Commonwealth Scientific & Industrial Research Organization, Melbourne; C. Grimshaw, University of Queensland; Eric Harrison, Australian High Commissioner, London D.K.R. Hodgkin, Australian National University, Canberra; Institute of Physics, Australian Branch, Adelaide (A.D.McRonald Rita Knight, Sydney; Frank Leechman, Sydney (work on opal); F.G. Lennox, C.S.I.R.O., Parkville; H. Messel, University of Sydney; C.J. Milner, University of New South Wales; E.E. O'Farrell, Government House, Hobart; Mark Oliphant, A.N.U., Canberra; William Oliver, London & Canberra; J.R. O'Sullivan, Director of Posts & Telegraphs, Adelaide; S. Pennycuick, Calvary Hospital (about work on "molecules of living matter"); Jim Reid, Somers; A.L. Reimann, University of Queensland; Royal Australian Institute of Chemistry (Prof. Battaerd & R.D. Cuming); Royal Society of New South Wales (Harley Wood); Royal South Australia Society of Arts, Adelaide (Lisette Kohlhagen); F.H. Schubert, St Peter's College, Adelaide; R.A. Smith, University of New England, Armidale; J.M. Somerville, University of New England; Lorna G. Todd, Adelaide; Trans-Australia Airlines, Hobart (J.B.G. Hulton); H.C. Webster, University of Queensland; F.W.G. White, Melbourne.
Other items include: notice of Bragg's lecture to Royal Society of New South Wales, 5 October; programme for polymer symposium at Royal Australian Chemical Institute, 19 October; programme for 4th Nuclear Research Foundation Summer School for Science Teachers, Sydney, Jan. 1961; notes on N.L.Jude, Kerr Grant, G.C. Ligertwood, James Melville and R.W.McG. Boswell; notes of names and addresses; itineraries.

Overseas visits: Belgium and Holland  W.L. BRAGG/69F  1945

Lawrence Bragg; Lecture tour of Belgium and Holland  W.L. BRAGG/69F/1  23 March - 3 April 1945

21 pages

Contents:
MS & typescript
Diary of visit.

Overseas visits: Canada  W.L. BRAGG/69G  1941

Lawrence Bragg; Visit to Canada  W.L. BRAGG/69G/1-112  March - September 1941

112 items

Contents:
Typescript, MS, duplicated & printed
Correspondence, 15 January 1941 - 16 January 1946, concerning arrangements for Bragg's stay in Canada as Scientific Liaison Officer, plans for visits in United Kingdom to collect information for trip, visits in Canada, reports and papers, research, invitations, thanks for hospitality, gifts sent from Canada. Correspondence with: Edward Appleton; A.H. Atkins, Shrewton; Howard Biers, Welland; E.L. Bowles, Massachusetts Institute of Technology; Beatrice Brown, Ottawa; O.F. Brown, Ministry of Aircraft Production; G. Calderone, Ottawa; Cambridge University; Canadian High Commission, London (E. MacLeod); Canadian Institute of International Affairs, Toronto (E.H.Heeney); J.D. Cockcroft, Ministry of Supply; Charles Darwin, Teddington; P.I. Dee, Swanage; C.E. Dolman, University of British Columbia; Edgar C. Evans, British Iron & Steel Federation; F. Fankuchen, M.I.T.; E.P. Fetherstonhaugh, University of Manitoba; William L. Fink, Aluminum Co. of America (pinhole pattern of aluminium-copper alloy; with photograph); [-?-] Fuller; C.E. Gausden, Montreal; H.J. Gough, Ministry of Supply; Lord Hankey, London; G.W. Hogg, Teddington; Frederick L. Hovde, U.S. Embassy, London; Andre Hove, Shawinigan Falls; W. Hume-Rothery, Oxford; Ian Maclennan, U.K. High Commission, Ottawa; J. McNaughton; F. Muller, RCA Manufacturing Co. Inc., London; F.C. Nix, Bell Telephone, New York; M.L.E. Oliphant, Birmingham; E. Ower, Ministry of Supply; C.S. Parsons, Ottawa; Arthur Phillips, Yale University; N.P. Pitt, Montreal; G.D. Preston, Teddington; D.R. Pye, Ministry of Aircraft Production; Joseph H. Schaffner, Washington; A.G. Shenstone, Ottawa; A.J.G. Smout, I.C.I. Metals Ltd; C. Sykes, Teddington; Joan Tanner, B.B.C., London; W.B. Timms, Ottawa; C.W. Ufford, Allegheny College; R. Wakefield, Ministry of Suppl Richard Whiddington, Admiralty; H. Wooldridge, Teddington; C.S. Wright, Admiralty. Other items include: Bragg's report on his visit to the Scientific Advisory Committee, Defence Services Panel, 1941; list of addresses in U.S.A. and Canada; list of reports received from United Kingdom.

Overseas visits: France  W.L. BRAGG/69H  1945

Lawrence Bragg; Visit to France  W.L. BRAGG/69H  2 July - 10 July 1945

7 items

Contents:
MS, typescript & printed
Diary of Bragg's visit to Paris, 2-10 July; programme for visit; list of people met; notice of lectures given by Bragg; map; MS rough notes of names, addresses, observations.

Overseas visits: Berlin  W.L. BRAGG/69I  November 1937

Lawrence Bragg; Visit to the Physikalisch-Technische Reichsanstalt and to the Kaiser Wilhelm Institut fur Physik, Berlin  W.L. BRAGG/69I  November 1937

7 items

Contents:
Typescript & duplicated
Correspondence, 13 October 1937 - 29 November 1937, concerning arrangements for Bragg's visit to Germany to attend the 50th anniversary of the Physikalisch-Technische Reichsanstalt. Correspondence with: F.E. Smith; Thos. Cook & Son Ltd; P. Debye J. Stark; Lord Rayleigh. With report by Bragg on visit, November 1937; 8½ pages, duplicated.

Overseas visits: Cologne  W.L. BRAGG/69J  June 1938

Lawrence Bragg; Visit to Cologne  W.L. BRAGG/69J  23 June - 26 June 1938

24 items

Contents:
Typescript, MS, printed; German & English
Correspondence, 10 April - 30 June 1938, concerning arrangement for Bragg's visit to Cologne to attend the 550th anniversary celebrations of the University and to receive an Honorary Degree from the University of Cologne. Correspondence with: Thos. Cook & Son Ltd; H. v. Haberer, Cologne; F. Kirchner, Cologne; [-?-] Kuhn, Cologne; Frank Smith, Westminster; P.J. Wheeldon, D.S.I.R., Westminster.

Overseas visits: Munich  W.L. BRAGG/69K  July 1962

Lawrence Bragg; Visit to Munich  W.L. BRAGG/69K  24 July - 28 July 1962

27 items

Contents:
Typescript, MS, printed & duplicated, English & German
Correspondence, 10 September 1961 - 16 August 1962, concerning arrangements for Bragg's visit to Munich and his contribution to the Laue commemoration meeting at Munich, July 1962. Correspondence with: F. Bopp, Munich; P.P. Ewald, Munich; Madeleine von Laue, Munich; George Menzer, Munich; Royal Society, London (D.C. Martin); D.W. Smits, International Union of Crystallography, Groningen. Other items include: minutes of meeting of the British National Committee for Crystallograph 15 November 1961; programme, tickets, registration forms for Commemoration Meeting, Fifty years of X-ray diffraction, 25-27 July, and for symposium, Recent advances in the experimental and theoretical methods of crystal structure research, 28-31 July, Munich; booklet of papers by Max von Laue - Interferenz-Erscheinungen bei Röntgenstrahlen (Laue, W. Friedrich & P. Knipping), Eine quantitative Prüfung der Theorie für die Interferenz-Erscheinungen bei Röntgenstrahlen, and Mein physikalischer Werdegang; reprint of H. Seeman's 1953 paper, Ubergang von Strichgitter-Interferenzen zu Raumgitter-Interferenzen von Licht-, Röntgen- und Korpuskularstrahlen in reellen Kristallgittern und lichtoptischen Strichgitterpaketen.

Overseas visits: Berlin  W.L. BRAGG/69L  1966

Lawrence Bragg; Visit to Berlin  W.L. BRAGG/69L  10 January - 13 January 1966

32 items

Contents:
Typescript & MS
Correspondence, 7 December 1964 - 11 February 1966, concerning arrangements for visit of Bragg and his daughter, Patience Thomson, to Berlin and for lectures by Bragg. Correspondence with: Rudolf Brill, Fritz Haber Institute, Berlin; British Council, London & Berlin; P.T. Hayman, Berlin; Horst W. Hartwic Free University of Berlin; H.J. Lieber, Free University of Berlin; Herbert Luers, Free University of Berlin; Senator [-?-] Stein, Berlin. With programme for visit.

Overseas visits: Berlin  W.L. BRAGG/69M  1967

Lawrence Bragg; Visit to Berlin  W.L. BRAGG/69M  19 September - 25 September 1967

26 items

Contents:
Typescript, MS & printed; English & German
Correspondence, 12 May 1967 - 14 November 1967, concerning the 100th anniversary celebrations of the German Chemical Society, at which Bragg gave lecture on The influence of X-ray analysis on chemistry, and received the August Wilhelm von Hofman Commemorative Medal of the Society. Correspondence with: R. Brill, Berlin; British Council, Berlin; R.G.A.Etherington-Smith, Berlin; German Chemical Society, Berlin (W. Fritsche, H. Ley, R. Wolf); Peter Haymer, Checkendon; Richard Lepsius, Baden-Baden. With invitation, programme and list of participants.

Overseas visits: Germany  W.L. BRAGG/69N  1965, 1968

Lawrence Bragg  W.L. BRAGG/69N  30 June - 10 July 1968

96 items

Contents:
Visit to Germany, and proposed visit, June 1965
Typescript, MS, printed & duplicated; German & English
Correspondence, 10 December 1964 - 22 July 1968, concerning Bragg's proposed visit to the 1965 Nobel Prizewinners' Conference in Lindau, which he cancelled because of illness, and his visit to the 1968 Conference at Lindau and to Munich, July 1968, where he opened the British Council Exhibition of Books on Science and Technology; includes correspondence concerning Bragg's lectures for the Lindau conferences, The determination of the atomic structure of biological molecules by X-ray analysis, 1965, and The history of the determination of protein structure, 1968. Correspondence with: G. Albert, Munich; Lennart Bernadotte, Lindau; British Council, London & Berlin; W.F.G. Drury, Bonn; German Travel Bureau, London; W. Hoppe, Munich; Hans F. Kiderlen, Lindau; Jakob Mayr, Lindau; R. Meche, Lindau; Naturwissenschaftliche Rundschau, Stuttgart (H. Rotta); Max Perutz, Cambridge; [-?-] Steurer, Lindau; George Thomson, Cambridge; Irmgard Wensel, Frankfurt; J. Weston Royal Institution. Other items include: summary, outline and notes for 1965 lecture; text of Bragg's 1968 lecture; programmes for conferences; The structure of some crystalline lysozyme-inhibitor complexes determined by X-ray analysis at 6 A resolution, by Louise N. Johnson & D.C. Phillips; Structure of hen egg-white lysozyme (murimadase), by C.C.F. Blake, D.F. Koenig, G.A. Mair, A.C.T. North, D.C. Phillips & V.R. Sarma; Structure and function of haemoglobin. 1. A tentative atomic model of horse oxyhaemoglobin, by M.F. Perutz; The X-ray analysis of biological molecules, by Lawrence Bragg, Lisbon, 7 Nov. 1963; First stages in the X-ray analysis of proteins, by Lawrence Bragg, Reports on progress in physics, 28, 1965; Naturwissenschaftliche Rundschau, Jan. 1965.

Overseas visits: India and Ceylon  W.L. BRAGG/69O  1960

Lawrence Bragg; Proposed visit to India & Ceylon  W.L. BRAGG/690  18 November-16 December 1960

74 items

Contents:
Typescript, MS, duplicated & printed
Correspondence, 12 June 1959 - 23 August 1960, concerning arrangements for Bragg's visit, which was cancelled because of Bragg's ill-health. Correspondence with: K. Banerjee, Calcutta; D.M. Bose, Calcutta; S.N. Bose, Calcutta; British Council, London; G.K. Chandiramani, Ministry of Scientific Research, New Delhi; S. Chatterjee, Calcutta; English-Speaking Union, London; G.I. Finch, Upper Heyford; [-?-] Husain, India House, London; R.L.D. Jasper, commonwealth Relations Office, London; N.S. Junankar, India House, London; M.G.K. Menon, Bombay; B.B. Sen, India House, London. Other items include: pamphlet about the Indian Association for the Cultivation of Science; names and addresses of British Council representatives; notes for British Council lecturers; itineraries; Board of Trade booklets, 1957 & 1958, giving advice to business men visiting India and Ceylon.

Overseas visits: India  W.L. BRAGG/69P  1963-1964

Lawrence Bragg; Visit to India  W.L. BRAGG/69P  9 December 1963 - 7 January 1964

267 items

Contents:
Typescript, MS, duplicated & printed
Correspondence, 31 January 1963 - 29 July 1964, concerning arrangements for visits to Madras, Delhi, Benares, Calcutta, Bangalore, Mysore, Bombay, arrangements for lectures, including 8th Meghnad Saha Memorial Lecture, films, bird-watching, Honorary Doctorate at University of Delhi, and correspondence concerning Royal Institution matters. Correspondence with: Academic Press Inc.; Air-India; Salim Ali, Bombay; M.A. Badshah Madras; B. Bonnell, Madras; D.M. Bose, Calcutta; B.B.C.; British Council; British Information Services, New Delhi; B.C. Buhariwala & Sons, Bombay; John W. Caroe, London; S. Chandrasekhar, Mysore; Corinne Condon, Royal Institution; Cox & Kings (Agents) Ltd, London; S.L. Dar, Varanasi; C.D. Deshmukh, Delhi; V.S. Deshpande, India House, London; Ruth Egerton, London; Mrs Usha Ganguli, Delhi; S. Govind Swaminadhan, Madras; Banshi Dhar Gupta, Delhi; R.D. Haworth, Sheffield; P.K. Kichlu, New Delhi; Ronald King, Royal Institution; S. Krishnamurthy, Madras; R.S. Krishnan, Bangalore B.D. Laroia, Delhi; A.S. Mani, India House, London; E.L. Mascal London; R.K. Mishra, New Delhi; A.L. Mudaliar, Madras; B.D. Nagchaudhuri, Calcutta; V.S. Patankar, New Delhi; N. Pitchandi, Madras; G.N. Ramachandran, Madras; Royal Society, London; N.N. Saha, Calcutta; V.V. Sastri, New Delhi; Jagdish Shankar, Bombay D. Sivasubrahmania Mudaliar, Madras; S.C. Srinivasan, Madras; C.F. Tunnicliffe, Malltraeth Bay; A.R. Verma, Varanasi; L.N. Welingkar, Delhi. Other items include: text of Saha Memorial Lecture, The difference between living and non-living matter from a physical point of view; text of lecture, X-ray analysis of biological molecules; diploma of Honorary Doctorate, University of Delhi; notes on Lady Bragg's interests; summaries of films on The nature of things and scripts of those on Solids, liquids & gases, The inseparables and Rubber & plastics proof of a paper, Some aspects of medical research; itineraries press cuttings; brochure about the bird sanctuary at Keoladeo Ghana; Checklist of Birds of Madras State, by M.A. Badshah.

Overseas visits: New Zealand  W.L. BRAGG/69Q  1960

Lawrence Bragg; Visit to New Zealand as Rutherford Lecturer  W.L. BRAGG/69Q  4 September to 2 October 1960

158 items

Contents:
Typescript, MS & printed
Correspondence, 21 April 1959 - 6 November 1961, concerning arrangements for visits to Auckland, Rotorua, Nelson, Wellington, Christchurch and Dunedin, and for visits on way to New Zealand to San Francisco, 26-7 August, and to Honolulu, 27 August-2 September, arrangements for lectures, including the Rutherford Memorial Lecture, delivered at the University of Canterbury, Christchurch, 21 Sept. 1960, and the Hudson Lecture given to the Wellington Branch of the Royal Society of New Zealand, broadcasts, the Honorary Doctorate from the University of New Zealand, Wellington, and election to Honorary Membership of the Royal Society of New Zealand. Correspondence with: R.S. Allan, Christchurch; Gilbert Archey, Auckland; Alex Bowman, Nelson; A.T. Campbell, New Zealand House, London; Gwendy Caroe; James D. Carroll, United States Embassy, London; F.E. Cumming-Bruce, Wellington; Yvonne Cumming-Bruce; G.A. Currie, Wellington; J.K. Dixon, Wellington; J.B. Earnshaw, Auckland; English-Speaking Union, London; English-Speaking Union, Otago Branch; D.C.W. Florance, London; D. Hall, Auckland; M.L. Huggins, Menlo Park; Mervin J. Kelly, Short Hills; G.R. Laking, New Zealand House, London; Mrs B.M. Lansdow New Zealand House, London; Reg Livesey, Taupo; Ernest Marsden, Wellington; Kenneth Mees, Honolulu; New Zealand Broadcasting Service, Wellington (J.L.Hartstonge); Thomas H. Osgood, United States Embassy, London; Quantas, London; Royal Society, London; Royal Society of New Zealand, Wellington Branch (John T. Salmon & Miss M. Wood); Isobel Schmidt, Honolulu; Philip Smithells, Dunedin; D.W. Smits, Groningen; F.G. Soper, Dunedin; Derek Studholme, Canterbury, N.Z.; W.H. Taylor, Cambridge. Other items include: text of Rutherford Lecture, The development of X-ray analysis; summary of Hudson Lecture, Molecules of living matter; notes about New Zealand; notes and programme for the Royal Society of New Zealand, Wellington; itineraries.

Overseas visits: Sweden  W.L. BRAGG/70A  1943

Lawrence Bragg; Visit to Sweden  W.L. BRAGG/70A /1-267  15 April 1943 to 14 May 1943

267 items

Contents:
Typescript, MS & printed
Correspondence, 1 January 1943-25 March 1946, about arrangement for visit, broadcasts, lectures, invitations (including invitations to make further visits), papers, letters & slides taken or sent to Sweden by Bragg, problem of exporting British and U.S.A. scientific journals to Sweden, research,gifts.Includes correspondence with: G.S.Adair; E.D.Adrian; Gregori Aminoff, Stockholm; Anglo-Swedish Society; Edward Appleton; Bennett Archambault; H. Arnfelt, Stockholm; F.A.Bannister (about X-ray index for Sweden); Mona Beauchamp; Carl Benedicks, Stockholm (re. surface tension, Adam Skapski); A.J.Bradley; B.B.C. (Christmas messages to Sweden, 1943 & 1944); British Council; C.W.Bunn; Cambridge University; Karl T. Compton, Massachusetts Institute of Technology (export of journals to Sweden); Henry Dale; C.D. Darlington; P.A.M. Dirac; Harry v. Eckermann, Sparreholm; Arthur Eddington; [-?-] Edlen; Jack Egerton; L.P. Eisenhart, Princeton (about export of journals to Sweden); U.S. von Euler, Stockholm; V.M. Goldschmidt; H.J. Gough; J. Gray; Richard Gregory (about J. Hansson's papers); Gunnar Hägg, Uppsala; Johan Hansson, Stockholm (about publication of his papers on World Morality and The spirit of evil); Caroline Haslett; Nils Hast, Stockholm (about thesis on stresses in solids); J.A. Hedvall, Göteborg; Paul de Hevesy (about Sweden and about article in which he hopes to show "irrefutably that the advent of the age of plenty is inevitable", 25 June 1943); C.K.Ingold (about Swedish work on synthetic rubber); L.P. Jacks (about J.Hansson's papers); Mrs Kihlbom; H. Lipson; Kathleen Lonsdale; Peggy Mallet, Stockholm; Ministry of Information (about publication of Bragg's Swedish lectures on The structure of protein and Strength of metals); A. Muller; D.P.O.'Brien, Rockefeller Foundation; Office of Censorship, Washington (about export of scientific journals to Sweden); E.J. Passant; Austen H. Peake (about J. Hansson's papers); Hans Petterson, Göteborg; T. Priergaard-Petersen; Percy Quesnel, Stockholm; O. Rydbeck, Stockholm; Richard Seligman; Monica Shaw; Manne Siegbahn; Stockholm University; C. Sykes; G.P. Thomson; Chancellor [-?-] Unden; [I.] Waller; Arne Westgren; Hubert Worthington. Other items include: report of C.D. Darlington's Swedish visit in December 1942, March 1943; text of Bragg's lectures, Seeing ever smaller worlds, with Swedish translation, and Strength of metals; Bragg's preliminary report of tour (brief notes); Production of perforated plates for optical Fourier transforms, by Gunnar Hagg, June 1943; report, Sweden: the Home Front, by a correspondent recently in Sweden, published in Economist, 24 April 1943 (duplicated); The Times Weekly Edition, 14 April 1943; notes on the work of the Institution of Applied Chemistry Uppsala; list of reprints for transmission to Sweden. Also notes by Bragg about his visit, newspaper cuttings and invitations.

Overseas Visits: Sweden  W.L. BRAGG/70B  1943

Lawrence Bragg; Visit to Sweden  W.L. BRAGG/70B/1  15 April 1943 to 14 May 1943

1 item

Contents:
Typescript, MS & printed
Bragg's report of his visit to Sweden and appendix giving preliminary outline report; includes photographs and maps:32 pages.

Overseas visits: Sweden  W.L. BRAGG/70C  1947

Lawrence Bragg; Holiday in Sweden  W.L. BRAGG/70C/1-43  June 1947

43 items

Contents:
Typescript, MS & printed
Correspondence, 27 February 1947 to 15 July 1947, concerning arrangements for his visit, with: British Council; Harry v. Eckermann, Sparreholm; Ronald Fraser; T. Gustafsen, Lund; Gunnar Hägg, Uppsala; J.A. Hedvall, Göteborg; Madam Prytz, London; P. Quesnel, Stockholm; M. Siegbahn; I. Waller, Uppsala; A. Westgren, Stockholm. With newspaper cuttings and map.

Overseas visits: Switzerland  W.L. BRAGG/70D  1950-1952

Lawrence Bragg; Visit to Switzerland, and proposed visit  W.L. BRAGG/70D/1-92  20 June 1950 to 3 July 1950; July 1952

92 items

Contents:
Typescript, MS, printed & duplicated
Correspondence, 12 September 1949 to 14 February 1952, concerning arrangements for Bragg's 1950 visit, lectures and holiday, and concerning proposal that he visit Geneva in July 1952, a visit which did not take place. Correspondence with: Bell & Lunns Travel Service; British Council; Centre d'Études Industrielles, Geneva (Paul M. Haenni); Robert McKie, Geneva; André Mercier, Berne; A. v. Muralt, Berne; National Provincial Bank Ltd, Cambridge; Werner Nowacki, Berne University; Parkhotel Schoenegg, Grindelwald; Physikalische Gesellschaft, Zürich (K.Wieland); P. Scherrer, Zürich; R. Staempfli, Berne; Swiss-British Society, Zürich (R. Ochsenbein & H. Straumann); Max Zellweger, Basle. Other items include text of Bragg's lecture, X-ray crystallography in the Cavendish Laboratory, June 1950, with German translation; programme; newspaper cuttings; notes on travel allowance and hotels.

Research notes: bi-refringence  W.L. BRAGG/71  nd

Lawrence Bragg  W.L. BRAGG/71/1  [ca. 1923]

Contents:
156 pages, MS and typed
Calculations of the refractive indices of calcite and aragonite.
[Used in papers: The Structure of Aragonite, by W.L. BRAGG, Proc. Roy. Soc. A, 105, 16, 1924; and A theoretical calculation of the rhombohedral angle of crystals of the calcite type, by W.L. BRAGG/and S. Chapman, Proc. Roy. Soc. A, 106, 369, 1924.]

Research notes: X-ray Optics  W.L. BRAGG/72  nd

Lawrence Bragg  W.L. BRAGG/72/1  [ca. 1930s]

Contents:
36 pages, MS
Notes for lectures on X-ray optics.
With 14 photographs of diffraction images, + 1 drawing. W.L. BRAGG/72/2-16

Lawrence Bragg  W.L. BRAGG/72/17  February, 1929

Contents:
X-ray Optics by W.L. BRAGG; British Journal of Radiology, 2, New Series, No.2, Feb. 1929, 65.

David Harker  W.L. BRAGG/72/18  June 1936

Contents:
The application of the Three-Dimensional Patterson Method and the Crystal Structures of Proustite, Ag3 AsS3 and Pyrargyrite, Ag3SbS3 Journal of Chemical Physics, 4, 381, June 1936.

Lawrence Bragg  W.L. BRAGG/72/19  29 August 1936

Contents:
Structure-Factor Graphs for Crystal Analysis, Nature, 138, 362, 29 August 1936.

Lawrence Bragg and H. Lipson  W.L. BRAGG/72/20  1936

Contents:
The Employment of contoured Graphs of Structure-Factor in Crystal Analysis; Z. Kristallogr. A, 95, 323-337, 1936.

J.F. Schouten  W.L. BRAGG/72/21  May 1938

Contents:
Eindhoven
Properties of Variable-Width Sound Film as an Optical Diffraction Grating; Nature, 141, 914, 21 May 1938.

Melvin Avrami  W.L. BRAGG/72/22  1939

Contents:
New York
A Method for the Direct Determination of Crystal Structure from X-ray Data; Z. Kristallogr. A, 100, 381-393, 1939.

H. Boersch to [Lawrence] Bragg  W.L. BRAGG/72/23  16 May 1939

Contents:
Berlin-Reinickendorf
1½ pages, typescript; German
Discusses the "X-ray microscope", designed to regenerate the image of an atomic structure from an optical analogue of its diffraction pattern. (The analogue was a pattern of holes punched into a mesh at the points of the reciprocal lattice.) In considering how the diameters of the holes could be matched to the intensities of the X-ray reflections, Boersch argues that the diameter d of the holes should be d~4[SYMBOL: square root]JR where JR is the intensity of the reflection.

[Lawrence] Bragg  W.L. BRAGG/72/24  22 April 1939

Contents:
A New Type of 'X-Ray Microscope; Nature, 143, 678, 22 April 1939

[Lawrence] Bragg  W.L. BRAGG/72/25  25 April 1942

Contents:
The X-Ray Microscope; Nature, 149, 470, 25 April 1942.

C.W. Bunn to Lawrence Bragg  W.L. BRAGG/72/26  17 May 1944

Contents:
I.C.I. (Alkali) Ltd, Northwich
11/3 pages typescript
Pleased for Bragg to use their "fly's eye" grating and the diffraction pattern in his account of the R.I. discourse. Has started writing up an account of the work for the joint paper; comments on this and discusses the need for extreme care in adjustment of the apparatus. Would like to mention the "fly's eye" method in his book, Chemical Crystallography; comments on this.

Research notes and reprints; silicates  W.L. BRAGG/73  nd

Lawrence Bragg  W.L. BRAGG/73/1  [ca. 1929/30]

Contents:
27¼ pages, MS & typescript
Notes for paper on silicates. With addendum, Sept. 1931; W.L. BRAGG/73/2
13½ pages, typescript. With two figures. W.L. BRAGG/73/3-4

Henry A. Miers to [Lawrence] Bragg  W.L. BRAGG/73/5  6 Dec. 1929

Contents:
Aberdare Gardens, West Hampstead
21/3 pages typescript
Pleased the silicate structures are progressing well. Would welcome a talk with Bragg. much has been written about the silicates from the chemical point of view, but until X-ray methods came along, it seemed speculative. Talk with [L.J.] Spencer might be useful "as representing the view of a pure mineralogist who has never quite appreciated the X-ray methods". Suggests that Bragg consult Doelter's Handbuch der Mineralchemie; comments on this. Thinks V.M. Goldschmidt and [P.] Niggli are on the right lines. Spencer thinks that minerals are so variable and complicated that you need an exhaustive study of all the properties of the material used for X-ray analysis before any definite conclusions can be drawn. Comments on the new edition of his Mineralogy.

J.E. Lennard-Jones to [Lawrence] Bragg  W.L. BRAGG/73/6  12 June 1930

Contents:
Bristol 21/3 pages typescript
Bragg's paper on silicates has fascinated him. Has given much thought to the theoretical problems it raises. Central point of the problem is why SiO4 sometimes behaves as an ordinary acid radicle, sometimes as one member of an extended, presumably neutral network. Probably a question of energy values; discusses this. The two distinct ways of satisfying the electron affinity of oxygen, i.e. by taking over an electron from a metal or by sharing again with another silicon, are responsible for successive changes from the orthosilicates to chains, then to the sheets and finally to the three dimensional form of quartz.

B. Warren to [Lawrence] Bragg  W.L. BRAGG/73/7  10 June 1930

Contents:
Massachusetts Institute of Technology
3¼ pages MS
Thanks Bragg for sending him the manuscript of Bragg's silicate paper. Recently met Sir William Bragg. Comments on his work on Hardystonite, Melilite and Wollastonite. Is starting work on Chrysolite; discusses this.

[Lawrence] Bragg  W.L. BRAGG/73/8  20 May 1927

Contents:
The Structure of Silicates; Royal Institution Discourse, 20th May 1927; 9 pages printed.

B.E. Warren  W.L. BRAGG/73/9  1929

Contents:
The Structure of Tremolite H2Ca2Mg5(SiO3)8; Z. Kristallogr., 72, 42-57, 1929.

S.v. Naray-Szabo  W.L. BRAGG/73/10  1930

Contents:
Ein auf der Kristallstruktur basierendes Silicatysystem; Z. phys. Chemie, B, 9, 356-77, 1930.

W.H. Taylor  W.L. BRAGG/73/11  January 1930

Contents:
The structure of analcite (NaAlSi2O6.H2O); Z. Kristallogr., 74, 1-19, 1930.

Linus Pauling  W.L. BRAGG/73/12  March 1930

Contents:
Pasadena
The Structure of Sodalite and Helvite; Z. Kristallogr., 74 213-225, 1930.

B.E. Warren and W. Lawrence Bragg  W.L. BRAGG/73/13  30 August 1930

Contents:
The Structure of Chrysolite, H4Mg3Si2O9; Z. Kristallogr., 76, 201-210, 1930

W.H. Taylor and S. Naray-Szabo  W.L. BRAGG/73/14  January 1931

Contents:
Manchester University
The Structure of Apophyllite; Z. Kristallogr. A, 77, 146-58, 1931.

[Lawrence] Bragg  W.L. BRAGG/73/15  11 Sept. 1934

Contents:
Newspaper cutting
Account of Bragg's talk to the British Association on the exploration of minerals by X-rays; The Times, 11 Sept. 1934.

[Lawrence] Bragg  W.L. BRAGG/73/16  [Sept. 1934]

Contents:
3¼ pages typescript; French
L'exploration du monde minéral au moyen des rayons X; second address by W.L. BRAGG/to the British Association.

Harry Berman  W.L. BRAGG/73/17  1937

Contents:
Harvard University
Constitution and classification of the natural silicates; Contributions from the Department of Mineralogy and Petrography, Harvard University, No.156. The American Mineralogist, 22, 342-408, 1937.

Notes for lectures, with some reprints and correspondence  W.L. BRAGG/74  1927-1936

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/1  22 Aug. 1927

Contents:
Cambridge 5½ pages MS
Has not done any more work on F-curves. Has been trying to get better approximations to the field whose wave functions give distributions of charge which reproduce themselves. Discusses this. Comments on the differences between the F-curves for his calculated distribution of charge and for Thomas's and comments on the [E.] Schrodinger distribution of charge. Has not yet started on the Ca+; problem; comments on this. Will get on to the Na and Cl work as soon as he returns from the Lakes; comments on this. One of the Part II men, Harper, would like to discuss X-ray technique with Bragg's people; discusses this. Hopes to be in Stockport in September and would like to talk about the Cl work if Bragg or [R.W.] James is in Manchester then.

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/2  24 Aug. 1927

Contents:
Keswick 3 pages, MS
Is enclosing some F values calculated with his Schrodinger field and with Thomas's field; discusses these. With figures. W.L. BRAGG/74/3

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/4  2 Oct. 1927

Contents:
Cambridge 2½ pages, MS
Discusses the plane and radial distributions of charge and their relative values in comparison of experiment and theory.
Is sending an approximate S distribution for the Cl- ion; comments on this. With graph for the Cl- ion. 1p.: W.L. BRAGG/74/5

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/6  7 Oct. 1927

Contents:
Cambridge 2 pages, MS
Thanks Bragg for the figures for the comparison of observed and calculated F's for Na and Cl; discusses these. Is ready to co-operate with [R.W.] James and [I.] Waller if Bragg thinks that will be practicable. Would be pleased to discuss the scheme with James.

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/7  11 Oct. 1927

Contents:
Cambridge 3¼ pages, MS
Has finished Cl- and has got a field which reproduces itself within the limits of error he allows; comments on this.
Comments on the table of the radial charge density in the field which he is sending. Discusses the outer (32) electrons. Is sharing a lecture course with [P.M.S.] Blackett. Hopes to get on with Na soon. [-?-] Harper would like to visit Manchester later in the term; comments on this. With calculations for Cl- charge distribution. 1p. W.L. BRAGG/74/7a

C.G. [Darwin] to [Lawrence Bragg]  W.L. BRAGG/74/8  17 Oct. [1927]

Contents:
Edinburgh 11/3 pages, MS
Has made a few notes on Bragg's paper. Bragg does not seem to bring in the temperature effect in the right place. Would like to have heard more about how [W.] Duane copes with his phases; comments on this. Has received [-?-] Robinson's papers; copied Bragg's suggestion with one amendment; comments on this. Discusses his own paper with [N.] Bohr but did not get the criticisms he hoped for. Paper was very difficult to write; he thinks that "a really good paper writes itself".
With comments on Bragg's paper: 2 pages, MS. W.L. BRAGG/74/9

D.R. Hartree to [Lawrence] Bragg  W.L. BRAGG/74/10  19 Oct. 1927

Contents:
Cambridge 3½ pages, MS
Hopes Mrs Bragg has recovered from her illness. Was surprised Bragg got such a large contribution to the sheet density, in the plane containing the nucleus, from the outer electrons, but it seems all right; comments on this. Comments on the progress of his work on Na. Wonders whether it would be best for him to publish his results as he gets them and leave the discussion of the comparison with X-ray information to Bragg; discusses publication of his work.

Lawrence Bragg  W.L. BRAGG/74/11  13 December 1927

Contents:
Manchester
82/3 pages, typescript & MS
Lecture, Some views on the teaching of science, given to the Manchester Literary and Philosophical Society, 13 Dec. 1927.
With notice of the meeting, 6 Dec. 1927; 1 page, printed. W.L. BRAGG/74/12

[Lawrence Bragg]  W.L. BRAGG/74/13  [ca. 1927]

Contents:
4 pages, MS
Notes on [R.J.] Havighurst's X-ray crystallographic work.

[Lawrence Bragg]  W.L. BRAGG/74/14  [ca. 1927]

Contents:
3½ pages, MS
Notes for first Royal Institution paper on silicates.

Science Masters' Association, North-Western Branch, (S.V.Brown & R.H. Gibbs) with Lawrence Bragg  W.L. BRAGG/74/15-19  30 July 1930 to 1 October 1930

Contents:
5 items, typescript, MS & duplicated
Correspondence concerning arrangements for Bragg's Presidential Address to the Association at Manchester Grammar School on 4th October. With draft of Bragg's speech, The new view-point in physics. W.L. BRAGG/74/19

[Lawrence Bragg]  W.L. BRAGG/74/20  [ca. March 1930]

Contents:
20 pages, typescript
Text of lecture on X-ray optics [? delivered at the Victoria University of Manchester, 31 March 1930].

[Lawrence Bragg]  W.L. BRAGG/74/21  [ca. 1930]

Contents:
22¼ pages, typescript
Lecture, The structure of the atom.

[Lawrence Bragg]  W.L. BRAGG/74/22  [ca. 1930s]

Contents:
13½ pages, typescript
Lecture, Electricity.

Walther Gerlach to [Lawrence] Bragg  W.L. BRAGG/74/23  21 May 1931

Contents:
Munich
6½ pages, typescript; German
Gives details of the course at the University of Munich for physics students and of the Doctorate degree. Includes notes about University careers and about the work of the Professor.
With notes on the syllabus for a physics student; 4 pages, typescript; German. W.L. BRAGG/74/24
With MS notes by Bragg summarising the information; 4½ pages, MS W.L. BRAGG/74/25

[Lawrence Bragg]  W.L. BRAGG/74/26  1932

Contents:
10 pages, MS
Notes on Bragg's visit to Russia.

[Lawrence] Bragg  W.L. BRAGG/74/27  11 July 1932

Contents:
University of Manchester
19 pages, printed
Lecture, The application of X-ray methods to industrial problems

[Lawrence] Bragg  W.L. BRAGG/74/28  16 March 1934

Contents:
The Physical Sciences, Science, 79, 237-240, 16 March 1934.

[Lawrence Bragg]  W.L. BRAGG/74/29  July 1934

Contents:
4 pages, MS
Experiences of American University Life; notes for lecture.

[Lawrence Bragg]  W.L. BRAGG/74/30  6 July 1934

Contents:
2½ pages, typescript
Speech proposing toast of Lady Moberly at a University of Manchester Dinner in honour of Sir Walter and Lady Moberly.
With printed menu. W.L. BRAGG/74/31

[Lawrence] Bragg  W.L. BRAGG/74/32  9 Nov. [1934]

Contents:
4 pages, printed; proof
The application of X-ray analysis to chemical problems: a survey, by W.L. BRAGG; IN Abstracts of contributions to a discussion on the applications of X-rays and spectroscopy to the elucidation of chemical structure; University of Manchester, 9 November [1934].

[Lawrence Bragg]  W.L. BRAGG/74/33  [1934]

Contents:
5 pages, MS
Notes for Bakerian Lecture [of the Royal Society].

H. Diederichs, Cornell University, with Lawrence Bragg  W.L. BRAGG/74/34-36  7 March to 28 March 1934

Contents:
3 items, typescript & MS
Correspondence concerning invitation to Bragg to talk to one of the Senior Honorary Societies, Sphinx Head or Quill and Dagger, and notes for Bragg's talk to Sphinx Head, on A scientific armistice, 28 March 1934.

[Lawrence] Bragg  W.L. BRAGG/74/37  May 1936

Contents:
Telegraphs and Telephones, the Gabrielle Howard Memorial Lecture of the British Science Guild, [May 1936]; reprint from Electricity, pp.193-240.
With synopsis of the lecture and notes about the Gabrielle Howard Lectures; 2 pages, printed. W.L. BRAGG/74/38
With notes by Bragg for lecture; 2 pages, typescript. W.L. BRAGG/74/39

[Lawrence Bragg]  W.L. BRAGG/74/40  [ca. 1930s]

Contents:
Worcester 9 pages, typescript
Text of speech given at the Prize Giving at Worcester School.

[Lawrence Bragg]  W.L. BRAGG/74/41  [ca. 1930s]

Contents:
13½ pages, typescript
Text of lecture on Crystal Physics.

[Lawrence Bragg]  W.L. BRAGG/74/42  [ca. 1930s]

Contents:
14¼ pages, MS
Notes on the classification of natural silicates and aluminosilicates.

[Lawrence Bragg]  W.L. BRAGG/74/43  [ca. 1930s]

Contents:
3½ pages, MS
Notes for lecture, On knowing all about electricity.

[Lawrence Bragg]  W.L. BRAGG/74/44  [ca. 1930s]

Contents:
2½ pages, typescript
Notes for article on electricity.

[Lawrence Bragg]  W.L. BRAGG/74/45  [ca. 1930s]

Contents:
1½ pages, typescript
Letter to The Times on The examination evil.

[Lawrence Bragg]  W.L. BRAGG/74/46  [ca. 1930s]

Contents:
3 pages, MS
Notes for speech at Prize Day at Sheffield School.

[Lawrence Bragg]  W.L. BRAGG/74/47  [ca. 1930s]

Contents:
3 pages, MS
Notes for speech to Hull Rotary Club on Science and Civilisation.

[Lawrence Bragg]  W.L. BRAGG/74/48  [ca. 1930s]

Contents:
7 pages, MS
Notes for talk at Leicester on The trend of modern physics.

[Lawrence Bragg]  W.L. BRAGG/74/49  [27 March 1935]

Contents:
4 pages, MS
Notes for talk, Is scientific progress a blessing or a curse.
With programme of the Wives' Fellowship, North Cheshire Branch; 1 page, duplicated. W.L. BRAGG/74/50

[Lawrence] Bragg  W.L. BRAGG/74/51  February 1935

Contents:
The new crystallography; reprint, pp.62-71; Bruce-Preller Lecture, delivered 4 Feb. 1935.
With Ms notes by Bragg, 4 pages; and paper by J.D.Bernal & Miss D. Crowfoot, X-ray photographs of crystalline pepsin, Nature, 133, 26 May 1934, p.794. W.L. BRAGG/74/52-53

[Lawrence Bragg]  W.L. BRAGG/74/54  [ca. 1930s]

Contents:
81/3 pages, typescript
Article on sound ranging.
With MS outline; 1½ pages. W.L. BRAGG/74/55
With graphical record of the end of the war, Nov. 11 1918; the last record by Sound ranging of Artillery activity on the American front near the Moselle; 1 page, printed. W.L. BRAGG/74/56

[Lawrence Bragg]  W.L. BRAGG/74/57  undated

Contents:
13 pages, MS
Notes for lecture on Science Teaching and Research.

[Lawrence Bragg]  W.L. BRAGG/74/58  undated

Contents:
10 pages, MS
Notes in German and English for talk on silicate structures.

[Lawrence Bragg]  W.L. BRAGG/74/59  undated

Contents:
4 pages, MS & typescript
Notes in German and English for lecture on X-ray optics.

[Lawrence Bragg]  W.L. BRAGG/74/60-61  undated

Contents:
Notes for lectures on Scientists in the War; a) at the Canadian Club, 3 pages, MS; b) at Cranwell, 4 pages, MS.

Alfred Wegener  W.L. BRAGG/74/62  undated

Contents:
13 pages, typescript
The development of continents and oceans.

Alloys: notes and correspondence  W.L. BRAGG/75A  1933-1934

A.M.Taylor to [Lawrence] Bragg  W.L. BRAGG/75A/1  23 Dec. 1933

Contents:
Rochester, N.Y. 2 pp, MS
Visited Cornell and discussed apparatus with Professor Collins. Comments on the apparatus which is essentially the standard apparatus of Voigt and Minor for photographic recording. Asks for details of Bragg's problem, in particular, whether he needs to know the dispersion and absorption.
Comments on information he wants about the alloys in question. Will be at Cornell from 1st February. Asks how much money there is for building apparatus at Manchester.

A.M.Taylor to [Lawrence] Bragg  W.L. BRAGG/75A/2  11 Jan. 1934

Contents:
Rochester, N.Y. 1p, MS
Cornell is interested in metallic films deposited by evaporation at high vacuum. Does not think they have equipment for making alloys. Asks if Bragg's alloys could be made in Manchester and sent over. Comments on distillation of alloys. Does not think optical apparatus at Cornell will be ready as soon as they had hoped. Refers to determination of n and k from surface reflection.

J.R.Collins to A.M.Taylor  W.L. BRAGG/75A/3  13 Dec. 1933

Contents:
Cornell University 1p, typescript
Suggests dates for Taylor's visit. Comments on apparatus they are constructing and on possibility of Taylor's working on the apparatus at Cornell.

H.Lowery to [Lawrence] Bragg  W.L. BRAGG/75A/4  29 Dec. 1933

Contents:
Manchester 1p, MS
Bor and Wilkinson did not discuss their "campaign" with him. They know they must get on with CuZn immediately. Has put E.W.Jones on the job as well.

C.Sykes to [Lawrence] Bragg  W.L. BRAGG/75A/5  2 Feb. 1934

Contents:
Metropolitan Vickers Electrical Co.Ltd, Manchester 1½pp, typescript
Is to modify Royal Society paper in accordance with the referee's suggestions; discusses this. Comments on experiments to determine constancy of the emf. of the thermocouples. Comments on new copper block they have constructed to eliminate difficulty of heat from one sample passing through the asbestos block into the other sample.
With paper: Some peculiarities in the physical properties of iron aluminium alloys. 23 Nov. 1933; 12½ pp typescript; W.L. BRAGG/75A/6

C.Sykes to [Lawrence] Bragg  W.L. BRAGG/75A/7  8 Feb. 1934

Contents:
Metropolitan Vickers, Manchester 2pp, typescript
Discusses heating and cooling experiments on a brass containing 48.2% Zn.
With three heating and cooling curves: W.L. BRAGG/75/8-10

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/11  23 Feb. 1934

Contents:
Metropolitan Vickers, Manchester 1p, typescript
Comments on progress of work on aluminium iron and copper gold resistivity samples. Is enclosing copy of theoretical specific heat curve for alloy of the type X³Y; comments on this.
With curve: 1p; W.L. BRAGG/75A/12

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/13  11 April 1934

Contents:
Metropolitan Vickers 1½pp, typescript
Pleased Bragg finds the specific heat curves interesting. Comments on similar curves obtained from a range of iron-aluminium alloys and on method they are using. Comments on method for making experimental resistivity temperature curves. Comments on work making metallic surfaces on glass by evaporation. Has spent a lot of time at the Radio Station at Rugby testing a large thermionic valve.

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/14  4 Sept. 1934

Contents:
Metropolitan Vickers ¼p typescript
Is enclosing note on the alloy having two Curie points; comments on this.
With note: A single phase alloy with two Curie points. Sept. 1934; 3pp, typescript; W.L. BRAGG/75A/15

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/16  4 March 1935

Contents:
Metropolitan Vickers 1½ pp typescript
Thanks Bragg for paper by [R.M.] Bozorth. Comments on resistivity and equilibrium curves for Cu3Au. Comments on Work on quenched alloys.

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/17  9 March 1935

Contents:
Metropolitan Vickers 1p, typescript
Gives results of work on specific heat of Cu3Au.
With 2 figures of specific heat curves and 1 page of notes. W.L. BRAGG/75A/18-20

C.Sykes to W.L. BRAGG  W.L. BRAGG/75A/21  11 March 1935

Contents:
Metropolitan Vickers ¼p, typescript
Comments on copper-gold alloy curves and on relaxation experiments made on iron-aluminium alloy.

[C.Sykes]  W.L. BRAGG/75A/22  ca. March 1935

Contents:
5½ pp typescript
Atomic arrangement in alloys.

[C.Sykes]  W.L. BRAGG/75A/23  June 1935

Contents:
Metropolitan Vickers 1½ pp typescript
Order-disorder transformations.

[C.Sykes]  W.L. BRAGG/75A/24  ca. June 1935

Contents:
4½pp typescript
Intermetallic compounds.
With 3 figures: W.L. BRAGG/75A/25-27

[C.Sykes]  W.L. BRAGG/75A/28  ca. June 1935

Contents:
12pp typescript
X-Ray powder photography of alloys.

C.Sykes to [W.L.] Bragg  W.L. BRAGG/75A/29  16 March 1935

Contents:
Timperley 5½pp MS
Comments on quenched curve [copper gold]. Discusses resistivity-time method of determining time of relaxation. Comments on Bailey's work on creep in steels.

[J.D.Bernall] to [W.L.] Bragg  W.L. BRAGG/75A/30  4 Feb. 1934

Contents:
Cambridge 4pp MS
Interested in Bragg's account of regularity transformation; comments on this. Discusses theory of normal melting. Rate of ordering in Bragg's theory may be low; comments on this. Comments on his career.

H.Bethe to [W.L.] Bragg  W.L. BRAGG/75A/31  27 March 1934

Contents:
Manchester 2pp MS
Is enclosing MS on order in alloys; comments on this. Refers to Peierls' work on intensity of the x-ray-superlattice lines. Refers to lectures he is giving. Hopes Bragg is enjoying his stay in USA.
With paper: Statistical theory of superlattices. 23pp, typescript & MS; W.L. BRAGG/75A/32, With 3 curves and 2 sheets of calculations: W.L. BRAGG/75A/33-36. With notes [by WLB] about Bethe's paper: 7pp, MS; W.L. BRAGG/75A/37

Linus Pauling to [W.L.] Bragg  W.L. BRAGG/75A/38  8 Feb. 1934

Contents:
Pasadena 1p MS
Thanks Bragg for copy of book; comments on this. Wishes he could come to New York to see Bragg. Would be pleased if Bragg could visit Pasadena.

H.Lowery to W.L. BRAGG  W.L. BRAGG/75A/39  26 Feb. 1934

Contents:
Manchester 2pp, typescript
Thanks Bragg for letter about optical constants of metals. Discusses progress of work on brass. Comments on meeting of the local section of the Institute of Physics.
With note: Measurement of the optical constants of metals: 1p, typescript; W.L. BRAGG/75A/40 and photograph of analysing system for optical constants of metals: W.L. BRAGG/75A/41

Cecil H.Desch to W.L. BRAGG  W.L. BRAGG/75A/42  28 Feb. 1933

Contents:
NPL, Teddington 1p, typescript
Thanks Bragg for tickets for lecture. Discusses rearrangement in internal condition of alloys and the nature of a metallic surface.

R.H.[?Fowler] to [W.L. BRAGG]  W.L. BRAGG/75A/43  4 April [-?-]

Contents:
Cambridge 5¼pp MS
Has been unjust to Bragg as missed relevant statement. Discusses hysteresis loops.

R.H.[?Fowler] to [W.L. BRAGG]  W.L. BRAGG/75A/44  23 April [-?-]

Contents:
Salisbury 1¼pp MS
Thanks Bragg for letter. Thinks Bragg's and Williams's theory is correct.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75A/45  10 April [-?-]

Contents:
Manchester 2½pp MS
Has not been able to get all the work done on the alloy papers; comments on this.

Alloys: notes and correspondence  W.L. BRAGG/75B  1933-1935

[W.L. BRAGG]  W.L. BRAGG/75B/1  [ca.1933/34]

Contents:
8pp, MS
Notes: form of specific heat curve when heating.
With 3 curves; W.L. BRAGG/75B/2-4

[W.L. BRAGG]  W.L. BRAGG/75B/5  [ca.1933/4]

Contents:
4pp, MS
Specific heat curve: allowance for time of relaxation.
With 6 curves: W.L. BRAGG/75B/6-11

[E.J.Williams]  W.L. BRAGG/75B/12  [ca.1933/4]

Contents:
5pp, MS
Notes on cooling of alloys from a very high temperature to absolute zero. [MS notes added by WLB]

[E.J.Williams]  W.L. BRAGG/75B/13  [ca.1933/4]

Contents:
5¼pp MS
Atomic arrangement in alloys.

[E.J.Williams]  W.L. BRAGG/75B/14  [ca.1933/4]

Contents:
11pp, MS
The effect of temperature on atomic arrangement in alloys.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/15  18 Oct. [1933]

Contents:
Copenhagen 4¼pp, MS
Discusses atomic arrangement in alloys, in particular the formulae for degree of order and for equilibrium distribution; the need to define two kinds of order - local order and order in the crystal as a whole; the dynamical problem; and the relation of V to elastic constants. Comments on planned papers. Refers to work on positive electrons.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/16  22 Oct. 1933

Contents:
Copenhagen 1p, MS
Comments on the relation of the potential energy V to the degree of order S. Apologises for delay in writing up alloy work.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/17  8 Nov. 1933

Contents:
Copenhagen 6½pp MS
Is enclosing extra calculations on atomic arrangement and paper. Discusses recalculation of degree of order for a given V and T, and the application of Boltzmann's relation. Comments on linear relation assumed for V. Discusses the dynamical problem. Comments on proposed paper and on further observations which might be made on alloys.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/18  14 Nov. [1933]

Contents:
Copenhagen 1½pp MS
Discusses formula for [...] Comments on equilibrium order-temperature curve which Bragg gave for V = [...] (S + S/2). Small breadth of superlattice lines shows there is a large number of superlattice planes between places where twinning takes place.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/19  24 Nov. [1933]

Contents:
Copenhagen 2pp, MS
Discusses finding of hysteresis effects for alloy properties and the central importance of V~VoS, commenting on his calculations. Refers to work on scattered radiation from lead.
[MS notes added by WLB]

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/20  [Dec. 1933]

Contents:
Copenhagen 5½pp MS
Discusses equilibrium formulae and possible explanation of observed hysteresis by the 'leg' effect. Discusses the triple intersection and the stability of the more symmetrical state. Comments on definition of order.

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/21  13 Dec. 1933

Contents:
Copenhagen 4pp MS
Is returning paper on alloys. Gives details of suggested alterations. Outlines method of calculating the probability of a given fluctuation.

[E.J.Williams]  W.L. BRAGG/75B/22  [1933]

Contents:
11pp, MS
Dependence of critical temperature on composition.

[W.L. BRAGG]  W.L. BRAGG/75B/23  [ca. 1935]

Contents:
½p MS
List of reference to papers on alloys.

[E.J.Williams]  W.L. BRAGG/75B/24  [ca.Dec. 1933]

Contents:
4½pp, MS
Suggested alterations to paper on alloys.

[ ] Hevesy to E.J.Williams  W.L. BRAGG/75B/25  14 July 1934

Contents:
Freiburg 3/4p typescript; German

E.J.Williams to [W.L.] Bragg  W.L. BRAGG/75B/26  12 Oct. 1934

Contents:
Copenhagen 2½pp MS
Thanks Bragg for letter about possible developments of alloy theory. Comments on discrepancy in specific heat. Discusses effect of departure from simple atomic ratio. Comments on diffusion. Would be pleased to collaborate with Bragg again. His investigations are taking longer than he expected.

[W.L. BRAGG]  W.L. BRAGG/75B/27  [1934]

Contents:
9½pp, MS
Notes on [E.J.] Williams's paper on alloys.

[W.L. BRAGG]  W.L. BRAGG/75B/28  [1934]

Contents:
12pp MS
Specific heat: allowing for time of relaxation. Notes and curve.

C.Sykes  W.L. BRAGG/75B/29  Sept. 1934

Contents:
2½pp, typescript
A single phase alloy with two Curie points.

A.Smits & N.F.Moerman  W.L. BRAGG/75B/30  3 Nov. 1934

Contents:
2½pp, printed
Complexity of the solid state. Nature, 134, p.698

H.Bethe to [W.L.] Bragg  W.L. BRAGG/75B/31  18 Dec. 1934

Contents:
Bristol 2½pp, MS
Has nearly finished paper on disorder. Discusses his new method of treating the problem which takes "long distance order" into account and gives results similar to Bragg's

[W.L. BRAGG]  W.L. BRAGG/75B/32  [ca.Dec. 1934]

Contents:
8pp, MS
Notes on [Hans] Bethe's paper on order/disorder.

Hans Bethe to [W.L.] Bragg  W.L. BRAGG/75B/33  21 Jan. 1935

Contents:
Baden-Baden 2pp, MS
Is enclosing order-disorder paper; discusses this.

C.Sykes & H.Wilkinson  W.L. BRAGG/75B/34  1937

Contents:
17½pp, printed
The transformation in the [beta] brasses. J.Inst.Metals, 1937, 61 (Advance copy)

[W.L. BRAGG]  W.L. BRAGG/75B/35  [ca.1935]

Contents:
6pp, MS
Royal Institution Lecture I. Technique of powder method. Notes.

[W.L. BRAGG]  W.L. BRAGG/75B/36  [ca.1935]

Contents:
15pp, MS
R.I.Lecture II. Notes on order/disorder

[W.L. BRAGG]  W.L. BRAGG/75B/37  [ca.1935]

Contents:
8pp, MS
R.I.Lecture III. Order/disorder

[W.L. BRAGG]  W.L. BRAGG/75B/38  [ca.1935]

Contents:
7pp, MS
Notes: superlattice structures.

[W.L. BRAGG]  W.L. BRAGG/75B/39  [ca.1935]

Contents:
8pp, MS
Notes on dynamic equilibrium

[W.L. BRAGG]  W.L. BRAGG/75B/40  [ca.1935]

Contents:
6pp, MS
Notes on non-linear relation. With two curves: W.L. BRAGG/75B/41-42

[W.L. BRAGG]  W.L. BRAGG/75B/43-49  [ca.1935]

Contents:
7 items
Order-disorder diagrams and curves.

[W.L. BRAGG]  W.L. BRAGG/75B/50  [ca.1935]

Contents:
10pp, printed
Order-disorder diagrams and curves.

[W.L. BRAGG]  W.L. BRAGG/75B/51  [ca.1935]

Contents:
1p, MS
Notes on Bethe's work on alloys.

[W.L. BRAGG]  W.L. BRAGG/75B/52  [ca.1935]

Contents:
1 p, MS
Notes on annealing.

[W.L. BRAGG]  W.L. BRAGG/75B/53  [ca.1935]

Contents:
1p, MS
Curve for Cu3 and Fe3Al, showing observed and theoretical curves.

[W.L. BRAGG]  W.L. BRAGG/75B/54  [ca.1935]

Contents:
2pp, MS
Notes: modifications introduced by a non-linear relation between V and S.

[W.L. BRAGG]  W.L. BRAGG/75B/55-75  [ca.1935]

Contents:
21 items, MS
Specific heat curves.

[W.L. BRAGG]  W.L. BRAGG/75B/76  [ca.1935]

Contents:
2pp, MS
Calculations [energy changes - order/disorder]

[W.L. BRAGG]  W.L. BRAGG/75B/77-78  [ca. 1935]

Contents:
2 items, MS
Heating curves, showing Bethe's findings.

[W.L. BRAGG]  W.L. BRAGG/75B/79  [ca. 1935]

Contents:
1p, MS
Notes (calculations): energy changes; order/disorder.

[W.L. BRAGG]  W.L. BRAGG/75B/80  [ca. 1935]

Contents:
8pp, MS
Notes: the free energy of the superlattice.

[W.L. BRAGG]  W.L. BRAGG/75B/81  [ca. 1935]

Contents:
1p, MS
Curve for energy changes [beta] brass.

[W.L. BRAGG]  W.L. BRAGG/75B/82  [ca.1935]

Contents:
3¼pp MS
Notes on Sykes' paper on alloys.

[W.L. BRAGG]  W.L. BRAGG/75B/83  [ca.1935]

Contents:
11pp, MS & typescript
Notes on resistance of alloys.

[W.L. BRAGG]  W.L. BRAGG/75B/84  [ca.1935]

Contents:
5pp + curve
Notes on thermal arrest point.

[C.Sykes]  W.L. BRAGG/75B/85  [ca.1935]

Contents:
1p, MS
Resistance-temperature curve.

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