The Peter H.B. Frelinghuysen Papers include correspondence, speeches, copies of legislation, notes, appointment books, and audio/visual material documenting Frelinghuysen's career as the United States House representative of New Jersey's 5th district from 1952 to 1975. The papers focus on his general House activities as well as his service on the Committee of Education and Labor, Committee on Foreign Relations, and United Nations General Assembly.

Consists of 167 letters by American poet William Meredith to his intimate friend Robert Drew from 1949 to 1972, postmarked Princeton, N.J., New London, Conn., and other places.

Consists of works, correspondence, a diary (1851), financial papers, biographical material, a bibliography, and printed matter of American Presbyterian clergyman and Confederate chaplain John Miller (Princeton Class of 1836).

Consists of approximately 689 flat works from the collections of the Princeton University Art Museum, temporarily transferred to the Princeton University Library for use in Princeton University courses during the 2025 Spring/Fall semesters.

The Chess Papers of Eugene B. Cook consists of correspondence, copies of classic chess manuscripts and diagrams, and memorabilia of Cook (Class of 1850), as well as notes and printed matter of the Appalachian Mountain Club.

Consists of a chronological series of 101 mathematical notebooks (1958-1997) of Princeton mathematician Bernard M. Dwork.

The David Wilkinson Papers consists of the scientific writings, professional correspondence, and subject and project files of David T. Wilkinson (1935-2002), the renowned experimental physicist and cosmologist who taught and conducted research in the Department of Physics at Princeton University from 1963 until his retirement in 2002. Wilkinson was a pioneer in the study and analysis of cosmic microwave background radiation, the nature and existence of which have yielded, through his lifetime's work, solid evidence for the Big Bang theory of the universe's birth. This collection contains the administrative (including his NASA and/or National Science Foundation funding and accounting paperwork) and background history of two of Wilkinson's main projects -- the Cosmic Background Explorer (COBE) and Microwave Anisotropy Probe (MAP) -- as well as evidence of the many and varied academic activities in his career.

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 collection contains manuscripts related to four generations of the Blanco White family, spanning two centuries: including works, diaries, correspondence, documents, accounts and expense records, and printed material. Joseph Blanco White, the Spanish-English writer and religious figure, remains the focus of the collection; however, his brother Fernando, a politician and intellectual of 19th-century Seville, also accounts for a substantial part of the material. Of particular interest are autograph manuscripts of several of Joseph's literary efforts, as well as other genealogical material relating to the Blanco White family.

Consists of manuscripts of novels, articles, stories, and verse by the American historical writer James Boyd.

Alexander Leitch was a member of the Princeton Class of 1924 and an administrator at Princeton University for the entirety of his professional career, most notably holding the Office of the Secretary from 1933 to 1963. Consists of 55 oversized scrapbooks assembled by Alexander Leitch '24 during his career as a Princeton University administrator.

The Office of the Vice President for Finance and Treasurer is the administrative office at Princeton University responsible for overseeing the university's budget, procurement services, tax compliance, risk management, and other general, non-investment related fiduciary responsibilities. The records in this collection primarily document the activities of three consecutive administrators who held the position of vice president for finance, either solely or in combination with the roles of treasurer and vice president for administration: Paul B. Firstenberg (1972-1976), Carl W. Schafer (1976-1987), and Richard R. Spies (1988-2001). Also included are the records of Laurel B. Harvey, who served as assistant vice president for finance and administration under Schafer and Spies.

Consists of various materials, including correspondence, diaries, documents, and genealogical materials related to Moses Taylor Pyne (Class of 1877), the Pyne family, and the history of Princeton University.

Horace and Thomas Meeker were father and son graduates of Princeton University. The papers document the University's admission processes circa 1925 and 1950.

Granville Austin (1927-2014) was an independent scholar and political historian known for his work on India's constitution. The collection is composed of Granville Austin's research files on India, mostly in the form of published articles or book excerpts that Austin collected and often annotated. The majority of the research files, notes and drafts relate to Austin's second book, Working a Democratic Constitution, but some files relate to his first book, The Indian Constitution: Cornerstone of a Nation. Topics documented in the collection include the Indian constitution, center-state relations in India, Indian politicians and political parties, U.S. foreign relations with India, cases tried before the Indian Supreme Court, and various other subjects related to India's political and legal systems. Research material on the Middle East, material relating to Austin's other writings, professional and personal correspondence, including State Department files, as well as U. S. Information Service photographs and negatives compose additional parts of the collection.

The American Whig Society (1769-1941) served as a major political, debating, and literary force both on the Princeton campus and throughout the nation. The Whig records consist primarily of minutes, financial records, and correspondence of members.

This collection comprises broadsides, posters and similar single-sided oversize printed objects created by or for Princeton University.

Consists of selected papers in Russian and English of Russian playwright, novelist, and storywriter Evgenii Ivanovich Zamiatin, primarily after 1931, when he emigrated to Paris, France. Included are autograph and typed manuscripts, articles, and letters.

The Selected Papers of Charles C. Black consists of documents (1881-1929) relating to various judicial and other appointments and letters received by Black (Princeton Class of 1878) from Abram H. Wintersteen, Herbert S. S. Smith, James R. Macfarlane, William T. Kruse, and others primarily concerning the activities of the Class of 1878.

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.