Consists of extensive manuscripts, documents, and correspondence of American poet and literary critic Allen Tate, one of the leading members of the Fugitive and Southern Agrarian literary movements.

Consists of typescripts and related material for American author Lloyd R. Morris's Not So Long Ago (1949) and William James (1950).

Richard Palmer Blackmur was a notable literary critic, poet, and Princeton University professor. This collection documents Blackmur's creative and academic efforts, and includes his critical essays, reviews, poetry, short stories, plays, and unpublished novels. In addition to his writings, Blackmur's papers contain significant correspondence with major literary figures of the twentieth century.

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.

Princeton University's School of Engineering and Applied Science is an academic unit which since 1921 has overseen the curriculum and administration of the University's academic departments in the engineering sciences. The records document the activities of the School of Engineering and its subordinate departments and programs from its origins in the late 19th century until the present, and consist of correspondence, subject files, research reports, photographs, and other audiovisual materials.

Established in 1904 as the Department of Geology, and later known as the Department of Geological and Geophysical Sciences, the Department of Geosciences has grown to become the center for the study of Earth, atmospheric, oceanographic, and environmental sciences at Princeton. The records document the department from its 19th-century origins to the recent past with departmental files, faculty files, faculty meeting minutes and visual materials.

The Class Records consist of a diverse set of materials documenting the history and activities of Princeton University classes during their time as undergraduates and as alumni. In the collection are correspondence, newsletters, publications, photographs, and memorabilia, all of which pertain to a particular Princeton University graduating class and its members.

The Allen W. Dulles Papers contains correspondence, speeches, writings, and photographs documenting the life of this lawyer, diplomat, businessman, and spy. One of the longest-serving directors of the Central Intelligence Agency (1953-1961), he also served in a key intelligence post in Bern, Switzerland during World War II, as well as on the Warren Commission.

The Campus Life series contains photographs documenting aspects of life as experienced by students, faculty, and staff at Princeton University.

R. B. O'Connor & W. H. Kilham, Jr. is the New York City architictural firm that was appointed in 1944 to design Princeton University's Firestone Library, which opened in 1948. The collection includes architectural drawings, plans and photographs of Firestone Library (1948) and the later addition of the John Foster Dulles Library of Diplomatic History (1962).