This file includes several letters exchanged with Piero Saffra as well as the following enclosures: 1 autograph letter, signed of introduction for Sraffa from Mary Berenson, 15 September 1921; 1 carbon typed letter from J.M. Keynes to J.C.C. Davidson, 29 January 1923; 1 autograph letter, signed from [C.] Gide to J.M. Keynes, 4 April 1930; 1 carbon typed letter from J.M. Keynes to [C.] Gide, 11 April 1930; 1 carbon typed letter from J.M. Keynes to Frank Ricardo, 11 April 1930; 1 typed letter, with manuscript amendments, for publication, soliciting letters of David Ricardo, [April 1930]; specimens of typeface for Royal Economic Society edition of Ricardo; 1 carbon typed letter from J.M. Keynes to J.V. Van Sickle, 22 February 1933; correspondence with W. Lewis of Cambridge University Press, December 1935-January 1936; copy of letters from C.K. Mill to F.A. Hayek, 2, 8, 12 July 1943; 1 carbon typed letter from J.M. Keynes to C.K. Mill, 6, 28 July 1943; 1 carbon typed letter from J.M. Keynes to G. O'Brien, 6, 28 July 1943; 1 carbon typed letter from G. O'Brien to J.M. Keynes, 12 July 1943; 1 typed letter, signed, from C.K. Mill to J.M. Keynes, 21 July 1943; 1 carbon typed letter from J.M. Keynes to J.W. Dulanty, 20 July 1943.