Alfred J. Lotka (1880-1949), a statistician for the Metropolitan Life Insurance Company, was a significant contributor to the field of demography. He was a pioneer in the study of population dynamics and conducted research on the mathematical theory of evolution and the mathematical analysis of populations. Lotka's papers document his scholarship and his involvement in professional organizations and include drafts of his works, his notes and research materials, and correspondence.

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.

Frank W. Notestein contributed significantly to the science of demography and to a better understanding of population problems in world affairs. The Frank W. Notestein Papers contain correspondence, speeches, and writings documenting the research, ideas, career and leadership roles of this former Princeton professor, director of the Office of Population Research, and president of the Population Council.

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.

The L. Ashton Sly Collection of Musical Scores is a 137 volume collection of vocal scores and/or libretti for one hundred twenty-three musical comedies, comic operas, and operettas, including twenty-eight full production promptbooks. These are arranged alphabetically by title and housed in 8 record center cartons.

Consists of a closed collection of more than 5,000 Western Americana photographs, consisting mostly of documentary photographs of the Trans-Mississippi West from the late 1860s to early 1900s, largely from the perspective of white photographers and settlers. Subjects include American Indians (especially studio portraits), natural wonders, cities, towns, buildings, and economic activities (mining, railroads, logging, and agriculture). Some photographs relate to the Indigenous populations of Mexico and Central America. The dimensions, physical formats, and photographic processes of the photographs vary widely.

Consists of material from and about the exhibitions held by the Special Collections in Firestone Library, primarily concerning subjects relating to American and English literature and art.

The collection illustrates the literary career of American author and professor Carl Van Doren, including typescripts and research notes for his Pulitzer Prize winning biography of Benjamin Franklin. The collection also contains various documents, including Van Doren's will, souvenirs, memorabilia, photographs, clippings, and printed material, as well as legal papers and correspondence dealing with his participation in several lawsuits involving copyright infringement.

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.

The Warner Bros. Screenplays consists of a large collection of scripts for films produced by the Warner Bros. studio.