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Frisch's letter to Cockcroft of 21 January begins 'Thank you for sending me those plans. One referred to the theoretical building and I have given it to Fuchs, who will write you his own comments'. Also included are Frisch's comments on a paper 'Absolute Calibration of a Neutron Source'.

1966. Carbon copy of letter from Kowarski to J. D. Cockcroft re Kowarski's contribution (not enclosed) to a presentation volume on the occasion of J. Chadwick's 75th birthday.
1967. Article by J. Combrisson on physics in France, annotated for Frisch by Kowarski.

Cockcroft, J.

Re telegram sent by Niels Bohr which led to the naming of the MAUD Committee.

1946, 1956, 1959, 1965, 1967

Concerns the effects of nuclear explosions. Includes related printed matter, 1 p. ms. calculations by Thomson and copy of letter from J.D. Cockcroft.

Correspondence re arrangements to come to Britain, visits to London, Cambridge, Birmingham, etc., offers of posts.
Correspondents include Blackett, Bragg, Cockcroft, Oliphant, and also Frisch's farewell exchange with Bohr, his CV, list of publications, etc.
There are typed duplicates of some of the letters at the back of the folder.
During the correspondence, Frisch refers to his friend F. Urbach and offers to cede his place to Urbach if only one was available.

Correspondence April-May 1947, including enquiries and advice sought by Frisch, official letter offering Chair, Frisch's letter of resignation to Cockcroft at Harwell, his Cambridge M.A. certificate, letters of congratulation (few survive).

Includes a letter from J.D. Cockcroft

Ms. and typescript versions.

Ms. and typescript versions.

Proof with ms. corrections.

Correspondence with Lady Cockcroft, and with Chadwick supplying a correction for the obituary; the correction appeared in Physics Bulletin, January 1968.

Obituary broadcast on 'Ten O'Clock' programme, September 1967.

Folder includes:
'Memorandum of Interview at Imperial College, 26 March 1946'. 1 p. typescript with brief covering letter to Thomson.
'Agenda for Meeting on Thermo-Nuclear Reactions on Jan. 15th, 1947'. 1 p. typescript.
'Note of a discussion on Tuesday, July 13, 1948, at Shell Mex House, in connection with the assignment of patent rights in Sir George Thomson's invention'. 1 p. typescript (2 copies) with covering letter from Sir John Cockcroft.
2 pp. ms. notes on various meetings and discussions, 1947-49, made by Thomson at a later date.

Correspondence Includes:
Copy of letter from Thomson to Lord Portal, 29 May 1947, suggesting that A.E.I. should be invited to take over the full-scale development of Thomson's thermonuclear research project.
2 letters from Cockcroft, 29 December 1947 and 13 January 1948, re arrangements for thermonuclear research work.
Letter from O. Bunemann, 6 February 1948.
Correspondence with Ministry of Supply, 1948 re assignment of rights in Thomson's joint patent application with M. Blackman (see E.71 ff.).
Letters from P.C. Thonemann (31 March 1950) and Lord Cherwell (8 May 1950) arranging meetings to discuss thermonuclear research.
Letter from Thomson to Cockcroft, 8 November 1950, renewing proposal to transfer the thermonuclear project at Imperial College to A.E.I.'s Research Laboratory at Aldermaston.