Working files of the architectural historians Rudolf and Margot Wittkower, dealing with Baroque and Renaissance painting, sculpture, and architecture. Included are manuscripts, notes, drawings, annotated proofs of articles and books, and some correspondence related to his writings and lectures. The majority of the files document his teaching, research, and writing at the University of London, 1934-1955, and at Columbia University. There are also some manuscript notes from his early years in Italy and Germany. Series I has been divided into six parts: Artists, Subjects, Book Manuscripts, Proofs, Notes, and Printed Materials. Some of the major files are Bernini, Bramante, Carracci, Michelangelo, and Raphael (Artists); Baroque Painting, Patronage, Rome, St. Peter's, Slade Lectures on the history of art (Subjects); ART AND ARCHITECTURE IN ITALY, BORN UNDER SATURN, and MATTHEWS LECTURES: GOTHIC VS. CLASSIC (Book Manuscripts). In addition there are proofs of essays and reviews with manuscript corrections and emmendations, copies of several of his own published works with his manuscript corrections, and typescript insertions for new editions. The Notes consist of eight card file boxes with notes chiefly relating to the Baroque period and Bernini. Materials created by or related to Rudolf Wittkower's wife, the architect and interior designer Margot Holzmann Wittkower, can be found primarily in Series II, IV, V, and VI. Material created or maintained solely by Margot Wittkower is located in Series VI; however, material she shared with Rudolf Wittkower is located in Series II, IV, and V.

This collection contains materials either written or collected by Samuel Eilenberg, including original mathematics notes, books and article drafts and revisions, correspondence with fellow mathematicians, friends, art museums and collectors, photographs, and family, personal and legal documents spanning 1902 to 1996.

Hecht's correspondence with other scientists, articles, lectures, notebooks, and laboratory notes and reports on the mechanics of vision and adaptation to light. The correspondence is primarily with William J. Crozier, Otto Glaser, Jacinto Steinhardt, George Wald, and Ernst Wolf. The notebooks cover the period from 1914-1925.

Correspondence, manuscripts, subject files and research notes of Sigmund Diamond. Included among the correspondence are Diamond's letters to and from various distinguished members of Columbia University and other academic insitutions, as well as correspondence with many noted sociologists and historians. Included in the manuscripts is Diamond's "In Quest." The subject files comprise material from Diamond's tenure at Columbia and include some material pertaining to his forced departure from Harvard in the 1950's due to his previous communist affiliation, and his active role in maintaining the efficacy of the Freedom of Information Act. The research files include microfilms and notes.

This collection contains the early records of the Society of American Historians (SAH). The bulk of the material relates to the founding of the magazine American Heritage in 1954, and the establishment of the Francis Parkman and the Allan Nevins Prizes, awarded by the SAH since 1957 and 1961, respectively. Also present is a small amount of research material collected by Allan Nevins, Columbia University history professor and one of the founders of the SAH.

Correspondence, Columbia University Graduate School of Journalism course notes, and printed materials. The papers deal with his books, the courses that he taught at the School of Journalism, and his "Winners & Sinners" department (correct English usage) at THE NEW YORK TIMES.

The records document the University Lecture series, from its beginning in 1972 to 1998. The files contain information about the speakers (cv, bio, clippings, and articles), event press release, advertisement, flyer/poster, invitation, guest lists, rsvp cards, dinner seating charts, Provost's introductory remarks, correspondence and other details about the logistics of the event. For a few, there is a transcript of the lecture. The electronic files consist of programs, posters, guest lists, biographies, planning documents, and photographs covering the years 2002 to 2016.

This collection contains correspondence, articles, lectures, notes, notebooks, field notebooks, maps, and photographs of geological consultant and professor of Geology at Columbia University, Walter H. Bucher, [ca. 1915]-1963.

Professional correspondence, diaries, unpublished articles, lecture notes, abstracts, and other manuscripts by Mitchell. Subjects include economic theory and its history, business cycles, money, national planing, anthropology and psychology, and published material by Mitchell and others.

This collection contains correspondence, 1906-1926, of William Henry Carpenter, Professor of Germanic Languages and Literature, Provost of Columbia University.