The Edward Livingston Papers document the career of American lawyer, diplomat, statesman, and legal theorist Edward Livingston. The collection also contains domestic, financial, and property records of some three dozen others, mostly members of the Livingston/Beekman branch of the Hudson River Valley Livingstons and the Montgomery, Davezac, Barton, and Hunt families; the family surveyor/agent John Cox, Jr.; and an Albany-area merchant Benjamin French, whose forfeited estate ended up in Edward Livingston's hands for debt collection.

Consists of files created by P.E.N. American Center as part of its regular business operations since its founding in 1922. Includes material on governance and policies, programs, awards, and financial aid granted to authors, and the center's involvement with International P.E.N. and other P.E.N. organizations worldwide. The collection is especially notable for its extensive author correspondence and occasional original manuscripts, as well as audio and video recordings of P.E.N. programs and events.

Christian Gauss was one of Woodrow Wilson's original preceptors, the first Class of 1900 Professor of Modern Languages, and the third Dean of the College. The Christian Gauss papers include personal and professional writings, correspondence, photographs, memorabilia, and assorted ephemera and printed matter, as well as numerous documents related to the Gauss family.

The collection consists of personal papers of Kimon Friar, one of the first and most prolific translators of modern Greek poetry into English. His work helped bring modern Greek literature to the attention of the international public.

The David Lloyd Agency Records on Pearl S. Buck Collection consists of correspondence, publication and translation rights, financial records, and other publishing-related material collected by the David Lloyd Agency regarding their client, the American novelist Pearl S. Buck.

The Alonzo Church Papers consists of the writings, correspondence, notebooks, notes, and subject files of Alonzo Church (1903-1995, Princeton Class of 1924), the renowned mathematical logician who taught at Princeton University from 1929-1967 and the University of California at Los Angeles from 1967 to 1990, and who was editor of the Journal of Symbolic Logic from 1936 to 1979.

An open collection of bound Ethiopic manuscripts with texts in Ge'ez and occasionally in Amharic.

Consists of the personal library of French philosopher Jacques Derrida and members of his household.

The Carlos Fuentes Papers consists of personal and working papers of Fuentes (1928-2012), Mexican author, editor, and diplomat, including notebooks, manuscripts of novels and novellas, short stories, plays, screenplays, nonfiction writings, speeches and interviews, translations of fiction and nonfiction, correspondence, juvenilia, drawings, documents, photographs, audiocassettes, videocassettes, papers of others, scrapbooks, clippings, and printed material.

The American Civil Liberties Union Records document the activities of the Union in protecting individual rights from 1920 through 1995. The files contain materials on freedom of speech, expression, and association; due process of law; equality before the law; legal case files; and organizational records. Within these categories files reflect subject areas such as academic freedom, censorship, racial discrimination, aliens' rights, privacy concerns, labor concerns, amnesty, and government loyalty and security. The files reflect work on litigation, advocacy and public policy, and subject files on various areas of interest connected with civil liberties. Materials include correspondence, court documents, memoranda, printed matter, minutes, reports, briefs, and legal files. Also included are materials from ACLU affiliate organizations, and the Lawyers Constitutional Defense Committee. Subgroup 2, Series 3 has been digitized and is available for members of the Princeton community to view here. To view the database from outside Princeton University, please see the Guide to the American Civil Liberties Union Records.