Consists of material relating to the American author Conrad Richter, including manuscripts, writing notebooks, notes, and galley proofs for several of his novels and other writings. Includes a substantial amount of personal and professional correspondence, as well as photographs.

Consists primarily of Carlos Baker's working papers and biographical files used in preparation of his biography Ernest Hemingway: A Life Story (1969). This was the fourth book on Hemingway written or edited by Baker (1909-1987), a Princeton professor and author. Also present are manuscripts for a novel and book of poetry by Baker, unrelated to his work on Hemingway.

This collection, which consists primarily of correspondence but also includes diaries, official and legal documents, ephemera, and photographs, largely relates to Samuel Comfort (1837-1923), a U.S. Civil War veteran, diplomat, inventor, and foreign representative for the Standard Oil Company in Europe and India. Documentation of Comfort's Civil War experience is particularly robust. To a lesser extent, the collection documents the family of Comfort's daughter Emma Walraven Comfort (1869-1954) and her husband, Harry Maule Crookshank (1948-1914), a distinguished physician who served as British Controller-General of the Daira Sanieh Administration in Egypt from 1897 to 1907. British Conservative politician Harry Frederick Comfort Crookshank (1893-1961) as well as several other members of the Comfort family, particularly Samuel's father, George Comfort (1808 -1887), are also represented.

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.

Consists of a collection of letters and autographs of over 120 English, American, and a few European actors, actresses, playwrights, theatrical managers, directors, critics, and others connected with the theater from the late 19th and early 20th centuries.

Consists of works, correspondence, and documents of William Kelly Prentice, a Greek scholar and authority on classical inscriptions, as well as selected papers of his father and various other family members.

Consists chiefly of letters of the Constitution signer and Philadelphia lawyer Jared Ingersoll to his son Charles while he was a student at the College of New Jersey (now Princeton University).

Consists of manuscripts, correspondence, documents, photographs, scrapbooks, and miscellaneous research material of librarian/archivist Milton Halsey Thomas, including research material for several of his historical publications.