The Princeton University Library is one of the foremost university libraries in the world. With collections totaling over 12 million volumes, manuscripts, and nonprint items spread across fifteen buildings, the Princeton University Library system serves not only the Princeton University community but the world at large. The Princeton University Library Records consist of the files of the University Librarian and other Library administrators and departments, as well as of the Friends of the Princeton University Library. Materials in the record group include correspondence, reports, publications, clippings, minutes, press releases, proposals, statistics, photographs and other audiovisual materials, and microfilm. The records document the Library's day-to-day operations as well as its involvement with other departments on campus, other college and university libraries, and library users.

The Department of Chemistry at Princeton University dates back to the early days of the College of New Jersey, and today it is one of the University's largest undergraduate concentrations. The collection contains examinations and grade books, records pertaining to chemistry research performed at the department in support of the U.S. Manhattan project and departmental records.

The Princeton University Bicentennial Celebration was a year-long series of events that began on September 22, 1946 with a sermon delivered by Geoffrey Francis Fisher, Lord Archbishop of Canterbury, in the University Chapel and ended with an address by President Truman in front of Nassau Hall at the June 17, 1947 Concluding Bicentennial Convocation. The Bicentennial Celebration Records contain correspondence, writings, speeches, press-releases, pamphlets, reports, newspaper clippings, tickets, transcripts, watercolor and pencil sketches and various other materials documenting the 1946-1947 Princeton University Bicentennial Celebration.

The Clive Bell Correspondence collection consists of letters received by the English writer and art critic Clive Bell (1881-1964) from Raymond Mortimer, Harold Nicolson, and V. (Victoria) Sackville-West ["Vita"]. Their content reflects both personal and professional matters.

The Princeton Nassoons are a close-harmony, all male, student a cappella group that formed in the late 1930s. The collection consists primarily of the Princeton Nassoons' original musical arrangements and correspondence.

Consists of files of American antiquarian book dealer J. Howard Woolmer's correspondence with various poets and writers and author photographs.

Ananda K. Coomaraswamy was a noted art historian and champion of Ceylonese and Indian culture. This collection covers a broad spectrum of Ananda K. Coomaraswamy's work in the fields of art history, philosophy, religion, and social criticism.

This collection documents the life and activities of Sylvia Beach (1887-1962), the American author, publisher, and owner of the Paris bookshop Shakespeare & Company, the Paris bookshop that was a meeting-point for French, English, Irish and American writers during the 1920's and 1930's. The collection consists largely of files relating to Shakespeare & Company; Beach's writings and translations, in particular her memoir Shakespeare & Company ; and files relating to the circle of artists and writers surrounding her throughout her life. Included are family, personal, and business correspondence; business records of Shakespeare & Company; personal and family records; manuscripts and artwork by members of her circle; photographs; and memorabilia.

Morris "Moe" Berg (1902-1972) was a Major League Baseball player, linguist, and lawyer who became a spy in World War II. The papers are comprised of correspondence, notes, photographs, and miscellaneous and printed materials covering all aspects of his life and work, but relating primarily to Berg's work with multiple government agencies.

This collection consists of the papers of photography historian, professor, author, and curator Peter C. Bunnell, spanning his student and professional career from the 1950s to 2018. Materials include subject files, correspondence, photographs, publications and drafts of publications, among other items.

Brooke R. Stoddard, Class of 2005 is a member of the University Press Club (UPC), who wrote a senior thesis about the history of the UPC in 2005. The collection contains correspondence and interviews with Princeton UPC alumni that Stoddard used for his research, as well as copies of clippings and printed materials.

Harlan Cleveland (1918-2008) was a public administrator, ambassador to NATO, and a political scientist. He served in several positions related to the administration of economic aid programs during the 1940s, as an assistant secretary in the State Department and as U.S. ambassador to NATO during the 1960s, and also held positions at three universities and the Aspen Institute. Cleveland's papers document his government service and his work at the Aspen Institute, and include his speech and writings files, as well as correspondence and photographs.

A collection of correspondence, sketches, proofs, notes, personal writing, photographs, and legal documents related to the life and careers of P. L. Travers (1899-1996) and Mary Shepard (1909-2000).

The Freedom House Records document the organization's activities in advocating freedom and democracy throughout the world. The records provide an invaluable insight into an organization that evolved from an answer to Hitler's Braunhaus to a diligent monitor of freedom worldwide.

This collection consists of works, lecture note cards, correspondence, an audio tape, and printed matter of American journalist and publicist Glen C. H. Perry (Princeton Class of 1926).

Consists of the personal and business correspondence, writings and drafts, promotional material, newspaper clippings, photographs, and sketches of the artist, Hedi Bak.

The Records of United Service to China, Inc., known from 1941 to 1946 as United China Relief, Inc., document the activities of the organization from the early formation in 1940 to its official consolidation with the American Bureau for Medical Aid to China in 1966. In addition there is a limited amount of material from other Chinese relief agencies that predate the founding of United China Relief / United Service to China. The Records focus on UCR/USC attempts to raise money in the United States, to educate Americans about China and the Chinese people, and to carry on relief work in China. The collection consists primarily of correspondence among the various individuals and agencies involved with UCR/USC, along with other material produced by the agency, such as minutes and publicity material. In addition, the collection includes a series of photographs dealing with China during the 1940s and efforts in the United States to raise money for China during the same period.

Consists mainly of printed matter collected by Strong (Princeton Class of 1922) relating to the field of strategic and scientific intelligence and espionage.

Consists of manuscripts and letters relating to the history and method of angling collected by Kienbusch (Princeton Class of 1906).

Sonya Rudikoff (1927-1997) was a writer, literary critic, and independent scholar, active from the 1950s through the 1990s, who wrote primarily on Victorian literature, feminism, and Virginia Woolf. The papers include Rudikoff's professional and personal correspondence, including five decades of extensive correspondence from second-generation Abstract Expressionist painter Helen Frankenthaler; typescripts of Rudikoff's unpublished fiction and lectures; notebooks, papers, and diaries from her time at Bennington College in the late 1940s; along with a curriculum vitae and bibliography of her work and some related materials.