6 autograph letters, signed, 7 typed letters, signed, and 1 autograph postcard, signed, from J.M. Keynes to John Saltmarsh. 11 Nov. 1930 - 21 Jan. 1942.
3 carbon letters, signed, from John Saltmarsh to J.M. Keynes. 23 June 1932 - 14 May 1938
14 autograph letters, signed, from F.A. Keynes to John Saltmarsh. 11 Oct. 1947 - 27 Oct. [n.y.]
5 carbon letters, signed, from John Saltmarsh to F.A. Keynes. 2 Feb. 1948 - 11 July 1957.