The University Land Records consist of deeds, mortgages, bonds, other legal papers, and maps concerning the acquisition, disposition, or description of University properties. The records document the physical expansion of the University from its earliest period through the acquisition of large tracts of land in the 20th century, including the properties around Carnegie Lake and numerous farms. A portion of the papers relate to research conducted by Professor Gerald Breese for his book Princeton University Land, 1752-1984 (1986).

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 Historical Postcard Collection documents the buildings and environs of the Princeton University campus in the form of picture postcards. Featuring both monochrome and color postcards, the bulk of the collection ranges in date from 1900 through the 1960s. Many of the postcards have been digitized and are searchable through Digital PUL.

The John D. Davies Collection on Hobey Baker, located in the University Archives, contains research materials gathered by Davies for the publication, The Legend of Hobey Baker (Little, Brown & Company, 1966). These papers contain correspondence, research notes, manuscript drafts, photographs and printed material pertaining to Hobey A. H. Baker's career as an athlete at St. Paul's Preparatory School, at Princeton University, and as a member of the American Expeditionary Force during World War I. Baker died in an airplane crash in 1918.

The Alumni Association of Nassau Hall, Princeton's first official organization of alumni, was founded on commencement day 1826. The collection consists primarily of administrative materials such as correspondence, meeting minutes, notebooks and reports belonging to both national and regional associations and their committees, most from the first half of the 20th century. Also contains newsletters, alumni directories, scrapbooks, reunion-related ephemera, photographs, and materials documenting reunions and alumni organization activities from the late 19th century forward.

This collection contains over 1,800 items including mugs, pipes, canes, banners, hatbands, pins, jewelry, and other material collected by many individuals that document reunions, sporting events, student traditions, and other aspects of University life.

The Department of Facilities at Princeton University is responsible for the construction, maintenance, renovation, and financial management of the buildings and properties owned by the university. The Department of Facilities records document the daily activities of the department and its numerous divisions through blueprints, photographs, correspondence, memos, sketches, contracts, ledgers, tax returns, incorporation papers, by-laws, annual reports, financial statements, newspaper clippings, booklets, and meeting minutes.

John Foster Dulles (1888-1959), the fifty-third Secretary of State of the United States for President Dwight D. Eisenhower, had a long and distinguished public career with significant impact upon the formulation of United States foreign policies. He was especially involved with efforts to establish world peace after World War I, the role of the United States in world governance, and Cold War relations between the United States and the Soviet Union. The Dulles papers document his entire public career and his influence on the formation of United States foreign policy, especially for the period when he was Secretary of State, and include his correspondence files, as well as his writings, reports, and memorabilia.

The Regional Offices series documents the work and administration of the ACLU's three regional offices: Mountain States Regional Office, concerned with civil rights in the west and Native American rights, the Southern Regional Office, focusing on civil rights in the south, and the Washington, D.C. office, which concentrates on national legislation and the actions of the federal government. The files include correspondence, case files, office publications, research files, and the papers of individual staff members. Subgroup 3, Subseries 5B (Southern Regional Office) 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.

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.

Harold Boies Hoskins was a businessman, diplomat, and educator working in Middle Eastern affairs. This collection consists of correspondence, diaries, notes, photographs, publications, maps, and professional files that document Hoskins' personal and professional activities, as well as the Hoskins family.

Tristan E. Beplat (1912-1997) was a New York banking executive with expertise in international banking. He had a significant role in the economic reconstruction of postwar Japan through his work in the Finance Division of the Economic and Scientific Section, General Headquarters, Supreme Commander for the Allied Powers. Beplat's papers document his service in Japan and include memoranda, papers, and reports on the banks and economy of Japan from 1945 to 1948.

The Woodrow Wilson Additional Materials consist of materials that the Seeley G. Mudd Manuscript Library has acquired on Woodrow Wilson since the mid-1990s.

David F. Bradford (1939-2005) was a professor of economics and public affairs at Princeton University and served on the faculty from 1966 to 2005. His main areas of study were public finance and urban problems, and he was internationally known as an expert on taxation. Bradford's papers document his academic career and include correspondence files and conference files, as well as papers related to his research with Harry H. Kelejian, his appointment books, and biographical materials from his years as a student.

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 2, 3, and 4 have been digitized and are 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.

Jessie Wilson Sayre was the daughter of U.S. President Woodrow Wilson and was a political activist. The Jessie Wilson Sayre Collection documents the close relationships amongst the Wilson and Axson families in the early twentieth century and provides details into their lives.

John Wallach was Foreign Affairs Editor of the Hearst Newspapers and Hearst News Service from 1968 to 1994 as well as an author and founder and President of Seeds of Peace, an international youth organization; Janet Wallach is a journalist, author, scholar, and President Emeritus of Seeds of Peace. The John and Janet Wallach Papers contain mostly interview transcripts and background information on topics relevant to John Wallach's career.

Professor Ansley J. Coale (1917-2002) was a demographer whose work focused on nuptiality, fertility, and mortality in several countries. Coale joined the Princeton University faculty in 1947 and spent his entire career as a member of the university's Office of Population Research (OPR). The papers contain correspondence, Coale's research papers and projects, and samples of data collected. The material spans the several decades (1950s to 1990s) Coale spent as a member of the Princeton faculty, as well as the work he did during his retirement.

Arthur Cyrus Warner (1918-2007) was an activist in the gay liberation movement, focusing his efforts on legal reform to protect the civil liberties of the gay community. Warner's papers document his involvement in legal reform and other issues pertaining to gay rights. The papers largely consist of legislative and court documents about cases affecting gay civil liberties, and related memoranda, correspondence, and writings.

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.