Psychoanalyst and author. Correspondence, writings, research files, and printed matter concerning Eissler’s writings on Sigmund Freud and his activities as secretary of the Sigmund Freud Archives. Material in digital format also includes a book draft.

Sociologist and educator (Robert Staughton Lynd). Sociologist (Helen Merrell Lynd). Family and general correspondence, writings and lectures, notes, research material, student papers, and miscellaneous biographical and genealogical material chiefly relating to the Lynds' sociological research and writings, especially their study of "Middletown," Muncie, Indiana.