8 letters and 2 fragments of letters, from:
- Ramsay Macdonald, 6 Mar. 1914
- James Balfour, 8 Jan. 1920
- Lord Haldane, 4 May 1924
- E. Rutherford, 20 June 1925, accepting congratulations for his Order of Merit
- Albert, the future George VI, 26 Apr. 1926, accepting congratulations on the birth of his daughter Elizabeth
- Lord Cecil, 9 Sept. 1927
- Stanley Baldwin, 30 May 1930
- Lord Halifax, 8 Jan. 1941, will take a letter to Butler's brother, will be happy to see one of the family 'after working with Rab so long'
- two fragments signed by Stanley Baldwin and Lord Grey