The Robert Judson Clark Papers consist of records pertaining to the architecture and grounds of Princeton University's campus and the surrounding area, compiled by professor emeritus Robert Judson Clark of the Princeton University Department of Art and Archaeology.

Consists of personal and professional correspondence between Lucius Hopkins Miller (Princeton Class of 1897), a professor in Princeton's Department of Religion, and Princeton colleagues, including Woodrow Wilson, fellow educators at other institutions, and publishers, such as Henry Holt.

The collection consists of autobiographical material and other works such as manuscripts of books, sermon outlines, prayers, articles, and essays; correspondence with family during the time Lowrie was in Europe (especially letters to his mother), but also correspondence with friends and colleagues, particularly Howard A. Johnson, a long-time friend and executor of his estate; photographs of religious art presumably used for his books; documents including certificates and agreements with book publishers; printed matter including reprints of published works; and writings and documents created by Howard A. Johnson and other Kierkegaard scholars.

The American Civil Liberties Union Records, The Roger Baldwin years, document the activities of the ACLU from 1917 through 1950. The files contain materials on conscientious objection, freedom of speech, academic freedom, censorship, and labor concerns. The files reflect work on litigation, advocacy, and public policy. Materials include correspondence and newspaper clippings. Subgroup 1 has been digitized in its entirety and is available for members of the Princeton community to view here. To view the database from outside Princeton University, please see the Guide to the American Civil Liberties Union Records.

A writer of fiction and nonfiction, Philip Gordon Wylie (Princeton Class of 1924), authored hundreds of short stories, articles, serials, syndicated newspaper columns, novels, and works of social criticism. His collection consists of manuscripts and correspondence representing his life work, ranging from Dormitory Ditties, published during his college days (circa 1920), to The End of the Dream, a novel published posthumously in 1972.

The Brandt & Brandt Contract Files consists primarily of contract files from Brandt & Brandt, the New York City literary agency, for published works where the rights have reverted to the author. Some represented authors are Margaret Banning, Bessie Brewer, Raymond Chandler, Carlos Fuentes, Arthur Machen, Mary McCarthy, Derek Patmore, Edna St. Vincent Millay, and Wallace Stegner. The Fuentes material (1967-1995) is extensive and covers a fuller range of literary agency activities.

The Legal Case Files series documents the ACLU's involvement in litigation, ranging from files collected on cases for research purposes to records of cases they were significantly involved in. The records include documents filed with the court, correspondence, lawyer's notes, depositions and expert testimony, transcripts of the trials, newspaper clippings, and research materials on the background of the cases and legal precedents.

Consists of the business records of Gerard B. Lambert (Princeton Class of 1908), including correspondence, bills, invoices, and financial statements, which reflect his position as head of the Lambert Pharmacal Co. of St. Louis, developers and manufacturers of Listerine.

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.

Founded in 1930 as a cooperative enterprise of the History, Politics, and Economics Departments of Princeton University at the undergraduate level, the Princeton School of Public and International Affairs has since grown into one of the nation's foremost centers for professional public policy education, offering degrees on both the undergraduate and graduate level and contributing original research in a wide variety of fields related to public and international affairs. The records document the school's founding and development and include correspondence, subject files, publications, and audiovisual materials.