5. Alan and Eleanor Gregg in Big Sur, California Creator: Bullock, Wynn Date: [4 November 1954] Genre: Photographic prints
8. Alan Gregg in service uniform during World War I Creator: Langfier Studios Date: [1918] Genre: Photographic prints
11. Memorandum from Alan Gregg to Raymond Fosdick Creator: Gregg, Alan Date: 13 November 1934 Genre: Memorandums
12. Letter from Alan Gregg to Roger S. Greene Creator: Gregg, Alan Date: 19 June 1930 Genre: Letters (correspondence)
13. Letter from Alan Gregg to William I. Myers Creator: Gregg, Alan Date: 7 September 1950 Genre: Letters (correspondence)
14. Memorandum from Alan Gregg to Chester I. Barnard Creator: Gregg, Alan Date: 7 January 1949 Genre: Memorandums
19. Notes on the essential function of a foundation Creator: Gregg, Alan Date: 22 August 1952 Genre: Notes