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

Benjamin Strong was a prominent New York banker who was instrumental in the foundation and success of the Federal Reserve Bank. This collection contains records pertaining to the former Benjamin Strong Collection of Foreign Public Finance in Princeton University Library, which was funded by Strong with the objective of acquiring books and original source material chronicling the development of foreign public finance, central banking, and international trade.

Consists of correspondence, manuscripts, photographs, and notes, both published and unpublished, of American author, journalist, enologist, and gastronome Julian Street, ranging from his early reporter and drama critic days (1900-1910) up to the page of Table Topics he was working on just before his death (1947).

Consists of the fairly complete working business files of the original Story and other related publishing ventures of owner-editors Martha Foley and Whit and Hallie Burnett, and the new Story author files of Richard and Lois Rosenthal. Included are editorial and personal correspondence, business and financial records, and artwork.

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.

The John Q. Stewart Papers consists of articles, correspondence, conference material, printed material, student papers, and other miscellanea of the American astrophysicist and educator John Quincy Stewart (1894-1972).

The James Stewart Collection contains seventeen screenplays of films in which starred American actor, Jimmy Stewart (Princeton Class of 1932).

The Jimmy Stewart Collection consists of newspaper and magazine clippings about the life and career of American actor, James Stewart (Princeton Class of 1932). Also included in the collection are film stills and other photographs.

Consists of photograph albums, diaries, engagement calendars, and documents of George Black Stewart (Princeton Class of 1906) who was treasurer (1906-1950) of the American University of Beirut.

The Adlai E. Stevenson Papers document the public life of Adlai Stevenson (1900-1965), governor of Illinois, Democratic presidential candidate, and United Nations ambassador. The collection contains correspondence, speeches, writings, campaign materials, subject files, United Nations materials, personal files, photographs, and audiovisual materials, illuminating Stevenson's career in law, politics, and diplomacy, primarily from his first presidential campaign until his death in 1965.

Contains manuscripts for 47 mystery novels written by American detective fiction writer Aaron Marc Stein.

Consists of papers of American architect and poet Edward Steese, including diaries, manuscripts, and architectural drawings.

Consists of papers of the American literary critic and novelist Donald A. Stauffer (1902-1952, Princeton Class of 1923).

Princeton professor of astronomy (1947-1982), chairman of the Dept. of Astrophysical Sciences, and director of the Princeton University Observatory, Lyman Spitzer was also primarily responsible for founding the University's Plasma Physics Laboratory. His papers include design studies, technical plans and programs, various reports, correspondence, notes, and observations relating to his involvement in the development of the study of space astronomy at Princeton.

Consists of personal journals of Theodore Spencer, American poet and essayist, and distinguished Harvard University literature professor.

Walter E. Spahr (1891-1970) was a professor of economics at New York University who was a strong supporter of the gold standard. Spahr was a founding member and officer of the Economists' National Committee for Monetary Policy, which advocated for sound monetary policies for the United States. Spahr's papers document his scholarship and include his writings and related correspondence.

Consists of a photograph album, loose photographs, and clippings belonging to Robert J. Sommers (1881-1972), primarily documenting his work as a highway engineer in Alaska in the late 1920s, as well as some materials related to his personal life and career as a civil engineer and businessman involved in construction. Of note is a photograph album documenting a tour of Alaska made in 1928 by Sommers with Governor George A. Parks and Major Malcolm Elliott.