These papers contain drafts, outlines, notes, and manuscripts authored by Horace Meyer Kallen (bulk 1930s-1960s), documenting his career as a founding professor of philosophy at the New School for Social Research (1919-1974). His papers also contain writings by others and research material in the form of offprints and printed journals. Many topics center on religion and his work with Jewish organizations during the 1950s-1960s.

These papers document the academic career of Reuben Abel (1911-1997), beginning with his undergraduate study at Columbia College and doctoral philosophy studies in the Graduate Faculty of the New School for Social Research, through his professorship at the university. It includes course notes and syllabi, and material documenting his student activities, such as his role as founder and editor of the New School student magazine, 12th Street: A Quarterly. Abel's papers reflect his position within the Graduate Faculty, consisting of correspondence with colleagues and deans, appointment letters, faculty minutes, and committee documents; in addition to his role as instructor and advisor to students, consisting of lecture notes, thesis committee work and doctoral exam requirement reviews. Contains one annotated typescript of his work, Man Is the Measure.