1. Diary entry on a meeting with Nathan Sinai Creator: Gregg, Alan Date: 17 March 1944 Genre: Diaries
2. Medical Economics photo for Rockefeller Foundation's 1942 Annual Report Creator: ?The? Rockefeller Foundation Date: [1942] Genre: Photographic prints
3. Letter from Alan Gregg to Nathan Sinai Creator: Gregg, Alan Date: 4 May 1943 Genre: Letters (correspondence)
4. Diary entry on lunch with Michael M. Davis, chair of the Committee on Research in Medical Economics Creator: Gregg, Alan Date: 30 June 1942 Genre: Diaries