The Isadore Gilbert Mudge Collection includes correspondence, writing, and publications related to Isadore Gilbert Mudge (1875 –1957) and her career as a reference librarian at Columbia from 1911 to 1941.

The correspondence, research, and teaching files of French-American cultural historian and Columbia University professor emeritus Jacques Barzun (1907-2012).

The collection consists of correspondence, memos, publications, reports, press clippings, press releases, sermons and speeches retained by the Rev. John D. Cannon, University Chaplain at Columbia University, 1966-1969.

Correspondence, documents, financial records and memorabilia. The personal correspondence of Lawrence A. Wien, 1960-1983; including memoirs and notes on interests both personal and financial. The Lawrence A. Wien Foundation files include correspondence, 1958-1976, information on the Foundation's 10-year trust, and information on tax returns. Files for the Charles and Rosanna Batchelor Memorial fund consist of general correspondence, grant requests, and miscellaneous financial documents. The Committee to Increase Corporate Philanthropic Giving files comprise a large part of the collection. Among the numerous individual corporations represented are the American Broadcasting Company and the Zale Company. Wien's Foundation for the Improvement of Housing Arrangements for Official Foreign Personnel has personal files for each person receiving the Foundation's benefits, guarantees for those individuals, and letters ment to solicit funds from various corporations

Professional and personal papers of the German émigré scholar Paul Oskar Kristeller. Kristeller was a professor of philosophy at Columbia University and a world renowned scholar of Renaissance humanism and Renaissance philosophy who published widely, notably his major catalog of uncataloged manuscripts from the Italian Renaissance, the Iter Italicum.

Correspondence, manuscripts, and notes. This collection contains the manuscripts for most of his books and articles. There are also copies of his many book reviews and articles by other authors analyzing the impact of his interpretations of American history. The correspondents include: H.S. Commager, C. Vann Woodward, Stuart Bruchey, S.E. Morison, Clarence Ver Steeg, Alfred A. Knopf, Helen Frankenthaler, Arthur Schlesinger, Jr., and others. There are also 70 books from his library

Correspondence, manuscripts, reports, slides, records, film and card files, and scrapbooks. The papers reflect Lindsay's various activities and are arranged in two sequences, an alphabetical name file and an alphabetical subject file. Since many of the subjects are closely related, the division between them is not always very sharp. Among the subjects covered are: social legislation, I.L.O., National Child Labor Committee, prohibition, labor, Republican National Committee, Institute for Social Research, League of Nations, humane legislation, housing, Harmon Foundation, Educational Radio Corporation, and the Bergh Foundation. Boxes 167-169 contain the files of the Committee for Industrial Relations, 1912-1914

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.

A collection of over 340 pieces of original material related to the demonstrations at Columbia University and their after-math, focused on actvities led by the Columbia Students for a Democratic Society (Columbia SDS) to protest the Vietnam War, end the construction of a Columbia gymnasium on public park land in Harlem, and include University students in institutional decision-making. Most items date to the spring and fall of 1968, including newspaper and magazine clippings, flyers for protests and demonstrations, letters, leaflets, journal and newspaper issues, essays, notices, press releases, memos, meeting minutes, proposals, and many other items, all collected and archived by Stuart Gedal, a student at Columbia and prominent SDS member.

Correspondence, manuscripts, documents, financial records, photographs, memorabilia, and printed materials. The Foundation's correspondence files consist of letters from different organizations and foundations, including the Martin Luther King, Jr. Center for Social Change, The NAACP, the United Negro College Fund, the Studio Museum in Harlem, and the YWCA. Also included in this collection are community dialogues on race relations (1974-1975); proposed dialogues (1979) on such subjects as the Boy Scouts of America, Columbia University, and the National Council of Christians and Jews; and files on the Whitney M. Young Fellows Retreat Conferences (1980-1984). The collection contains many files on Ed Wilson's bust of Young (1991), including contracts and agreements, records of payments to Wilson, documents concerning the bust's placement in various locations, correspondence with Wilson (1983-1991), and miscellaneous photographs and pictures. The contributions files contain annual listings of contributions and records of contributions from the National Urban League, assorted organizations, corporations, individuals, foundations, and Philip Morris.