Arthur Friedman is an American collector in music and theater. His collection consists of bound scrapbooks of opera programs and playbills for theater and concert performances covering eighty years of regular attendance by Friedman in New York City at the Metropolitan Opera House, Carnegie Hall, Town Hall, and various legitimate theaters.

The American Civil Liberties Union (ACLU) is the pre-eminent civil liberties organization in the United States, utilizing litigation, lobbying, and public education to defend and preserve the individual rights and liberties guaranteed by the U.S. Constitution. These records document the administration and work of the ACLU's national office, regional offices, and legal projects, with particular emphasis on the areas of civil rights, children and women's rights, freedom of speech (and all First Amendment questions), and due process, among many others. The records include case files, correspondence, meeting minutes, research files, and files of staff members. Portions of the records (Subgroup 1; Subgroup 2, Series 2, 3, and 4; Subgroup 3, Subseries 5B) 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.

Consists of approximately 5000 early 20th-century American architectural drawings (blueprint and trace drawings), primarily by C. Grant La Farge and various firms with which he was associated, including Heins & La Farge, La Farge, Clark & Creighton, La Farge, Warren & Clark, La Farge & Morris, and La Farge & Son. There are also groups of drawings by the architects Wilson Eyre, Pennington Satterthwaite (Princeton Class of 1893), Robert Gibson, and a few miscellaneous firms.

This collection consists of offprints of articles written by Princeton alumni and faculty; however, in some instances the articles are written about an individual alumni or faculty member. The offprints generally consist of journals, published articles, speeches, lectures, sermons, memorials, and articles from scientific journals and magazines.

Consists of selected letters and photographs of authors, poets, and friends collected by Alice Davis Tibbetts, secretary, companion, and romantic partner of Edgar Lee Masters.

Consists chiefly of letters by Alfred Thayer Mahan to his publisher regarding his writings about United States naval history. Mahan was a U.S. naval officer in the Civil War, and his work on the importance of adequate navies and merchant marines influenced the policies and philosophies of national leaders across the globe, including those of the 26th president of the United States, Theodore Roosevelt.

Consists of personal, professional, and academic papers of the Pueblo anthropologist Alfonso Ortiz (1939-1997), including correspondence, working files, and materials related to the Association on American Indian Affairs (AAIA).

Albert Montefiore Hyamson was a British civil servant, Zionist author, and historian who served from 1917-1921 in the Jewish Bureau of the United Kingdom Department of Information and from 1921-1934 in Mandate Palestine as Director of Immigration. The Albert Montefiore Hyamson Papers consist primarily of reports written by the Palestine Group in the The Royal Institute of International Affairs, correspondence regarding Palestine between Hyamnson and J. L. Magnes, and a small amount of clippings.

Consists of selected manuscripts, correspondence, and documents of the twentieth-century British biographer and bibliophile A. J. A. Symons.

Consists of works, letters, photographs, and printed matter of Leroy Lansing Janes, a teacher at the Kumamoto Yogakko (Kumamoto School for Western Learning) in Japan (1871-1876).