The material in the collection is composed of:
- typescript biographies of and notes on Chisholm by John Macfarlane and H.J. Fleure and various
- copy of typescript letter to C.J. Robertson from the IGU Commission on the History of Geographical Thought, dated 9 May 1975
- copies of typescript letters to Marguerita Oughton from C.J. Robertson, 3 May 1975, 16 June 1975 and 20 June 1975
- copy of typescript letter to Walter [Freeman] from C.J.Robertson dated 23 July 1974
- copy of part of a typescript letter from C.J. Robertson to Freeman dated 20 August 1951
- copy of an extract of a typescript letter from E.M. Gorrie to Freeman dated 10 September 1951
- copy of typescript letter from J.Y. Erskine to Freeman dated 30 September 1950