The file comprises:-
- 5 autograph letters signed from A. C. Pigou to RFK, [1947-53];
- 1 copy typed letter from RFK to Pigou, 8 July 1947;
- 1 autograph letter signed from Pigou to E. A. G. Robinson, undated.

23 autograph letters, signed, 1 autograph postcard, signed to J.M. Keynes. 1907-43 and undated.
5 carbon typed letters, signed, from J.M. Keynes. 1928-43.
This file also contains 1 carbon typed letter, signed, from J.M. Keynes to Piero Sraffa, 18 June 1940.

This file contains exchanges, chiefly with H.D. Henderson, A.C. Pigou, L. Robbins, A. Rose and J. Stamp on such subjects as agricultural depression, public works, causes of unemployment, unemployment benefit, establishment of the Committee of Economists, dispute with Robbins over the wording of the Economists' report, the Committee on the Chinese Situation, 1930, and import duty on gold,1937. It also contains 2 cuttings on the formation of the Council, 1930.

This sub-series covers debates with G. Haberler, R.F. Harrod, R.G. Hawtrey, H. Henderson, R.F. Kahn, S. Kuznets, A. Lerner, B. Ohlin, A.C. Pigou, D.H. Robertson, E.A.G. and J. Robinson.

The file contains assorted papers relating to the redrafting for publication of RFK's Fellowship Dissertation, including dissertation reports by A. C. Pigou, D. H. Robertson and J. M. Keynes, 1930, and manuscript notes by A. Kahn; 2 autograph letters signed from A. C. Pigou to RFK about publication, [1930]; interviews with businessmen, newscuttings, notes and a draft of chapter VII 'Is the business man an economic man? i) marginal principle'.

Two autograph manuscript essays on index numbers, 1 marked by A. Marshall, 31 October 1905, and 1 autograph letter, signed from A.C. Pigou to J.M. Keynes crticising an unidentified essay submitted for inclusion in 'Economic Journal', undated.

The essays in this file comprise: L.D. Drummond Fraser, 'Day to day government borrowing in wartime' (1917); R.H. Brand 'Problems relating to financing foreign governments' (an address to American Bankers Association, 26 September 1917) and a typescript, 'The war debt and the consumption of wealth' by A.C. Pigou, undated.

The file includes 1 autograph letter signed from John Maynard Keynes to Joan Robinson, 4 Sept. 1941; 1 typed letter signed from Lydia Lopokova Keynes to CK, 31 Jan. 1940; 2 autograph letters signed from Dennis Robertson to NK, 21 and 27 Oct. 1937; 1 autograph letter signed from NK to Robertson, 29 Oct. 1937; and 2 autograph letters signed from A. C. Pigou to NK, [Oct. 1937]

1 autograph letter signed.

2 autograph letters, signed.

2 autograph letters signed and 4 typed letters signed from D. W. Davies, Ralph O. Erickson, E. T. Goodwin, Walter H. Lee, A. Lerner and A. C. Pigou to Mrs Turing. The letters contain recollections of AMT sent to Mrs Turing, before and after the publication of her biography, 'Alan M. Turing' (Heffer: Cambridge, 1959).

- 2 copies of review by N.A. Routledge in Cambridge Review, 11 June 1960, of Mrs Turing's biography.

The file comprises:
- 'Industrial Fluctuations' (London: Macmillan, 1927);
- off-print 'The elasticity of substitution', from the 'Economic Journal', Vol. XLIV, No. 174, June 1934.

The file comprises correspondence, autograph manuscript notes, equations and diagrams exchanged with RFK in working out ideas for her book 'Economics of imperfect competition', with 6 autograph letters signed from A. C. Pigou and 1 autograph letter signed from Colin Clark to RFK on the subject.

The file contains correspondence, accounts, hotel brochures and postcards concerning mountaineering holidays in Switzerland and the Lake District, including notes by Piero Sraffa and A. C. Pigou.

This collection contains letters written by ACP, memoirs and publications about ACP.

Typescript reports to the electors to Fellowships by A.N. Whitehead, W.E. Johnson and A.C. Pigou on J.M. Keynes' 1907 dissertation, with correspondence between W.H. Macaulay and J.M. Keynes on same, 1907-8 ; typescript report by A.N. Whitehead and W.E. Johnson on 1908 submission, 1909.

The file contains assorted 'documents' and memoranda, including an undated autograph letter signed from A. C. Pigou.

Correspondence in discussion with colleagues on the writing in progress and at proof stage. Includes correspondence with R.G. Hawtrey, R.F. Kahn, A.C. Pigou, D.H. Robertson, O.M.W. Sprague and W.W. Stewart. Correspondence with D.H. Robertson also included discussion of Keynes' 'Banking policy and the price level' (1926).