This collection comprises correspondence, postcards, and ephemera related to the Collège de 'Pataphysique, collected by Guy Warzawski, a Polish-Belgian professor. The Collège de 'Pataphysique was founded in Paris in 1948 and is dedicated to the furtherment of pataphysics, a parodistic "science of imaginary solutions" invented by French symbolist writer Alfred Jarry.

The Historical Subject Files Collection documents Princeton University history and related topics from 1746 to the present. The collection consists of documents in almost every two-dimensional format: articles, books and booklets, clippings, correspondence, memoranda, non-photographic images, notes, pamphlets, posters, and reports.

The Council of the Humanities was founded in 1953 at Princeton University to foster teaching, research and intellectual exchange. Consists of materials collected and generated by the Council of the Humanities, including materials pertaining to the Ford Foundation Project.

The Ivy Plus Libraries Confederation is a consortium of 13 academic libraries including Brown University, the University of Chicago, Columbia University, Cornell University, Dartmouth College, Duke University, Harvard University, Johns Hopkins University, the Massachusetts Institute of Technology, the University of Pennsylvania, Princeton University, Stanford University, and Yale University. Key initiatives include the Borrow Direct Program and the IPLC Web Collecting Program. This collection includes administrative records kept by the Confederation for internal use, including charters, strategic plans, policy documentation, working group charges, program guides, annual reports, and minutes.

Consists of personal and working papers of Cobo Borda, a Colombian poet, essayist, journalist, and diplomat, primarily manuscript poems and essays as well as correspondence, spanning the period from 1970 to 2017. There are also manuscripts of speeches and interviews, nonfiction works, documents, photographs, a few papers of others, scrapbooks, and a small amount of printed material.

John C. Bogle (1929-2019) founded the mutual fund company Vanguard and is a leader in the mutual fund industry. He is an outspoken advocate for low-cost investing, index funds, and the rights of investors, and a critic of the mutual fund industry. Bogle's papers document his career with Vanguard and Wellington Management Company, and his involvement with the United States Securities and Exchange Commission, and include his speeches and correspondence, reports, memoranda, and clippings.

Joseph O'Connor is an Irish novelist, screenwriter, playwright, journalist, broadcaster, poet, and professor of creative writing. The collection consists of drafts, research, publicity, and recordings related to O'Connor's books and plays for radio, screen, and stage; as well as notebooks and diaries, correspondence, business and publicity files, and photographs.

Karl Klare is a legal theorist prominent in the field of Critical Legal Studies (CLS). The Karl Klare Papers document Klare's work in the CLS movement. The papers include correspondence and planning materials for CLS conferences, publications and readings assembled for CLS conferences, as well as class readings and syllabi.

The Lesbian Gay Bisexual Alliance (LGBA), is the social and political organization for lesbian, gay, and bisexual students at Princeton University. The LGBA is the successor to the Gay Alliance of Princeton (GAP), Gay Women of Princeton (GWOP), the Lesbian and Bisexual Task Force (LBTF), and Gay and Lesbian Alliance of Princeton (GALAP). The records contain material regarding the LGBA's programs and its publications, as well as subject files assembled by the LGBA's officers and staff.

The Lloyd E. Cotsen Papers consist of papers and personal items of Lloyd Cotsen's related to his time as an executive at Neutrogena Corporation, his art and book collection practices, his philanthropic contributions, his archaeological interests, and photographs shot by Cotsen. Items related to the production of Cotsen Occasional Press publications are also included. Material dates from 1949 to 2021.