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 study of biology began at the College of New Jersey with the appointment in 1830 of botanist John Torrey into a part-time faculty position; it expanded with the formation of the School of Science in the 1870s; and was established as a department in 1904. The collection primarily consists of the records of the Department of Biology assembled during the tenures of Department Chairmen Edwin G. Conklin and Elmer Butler. Included are correspondence, general subject files, and records pertaining to grants, research endowments, publications, and administrative matters such as budgets and staffing. Also includes sponsored research reports and student grade cards.

Joseph Edward Raycroft was Princeton University's Chairman of the Department of Health and Physical Education. The Papers contain correspondence, writings, press-releases, reports, newspaper clippings, photographs, and memorabilia documenting Raycroft's personal life and career. Also included are library catalog lists and other material related to Raycrofts Library of memorabilia

Bernard M. Baruch was a financier and public adviser. This collection consists primarily of public papers relating to Baruch's various involvements in government affairs.

The Robert Warren Anthony Papers consists of diaries, notes, reports, correspondence, and photographs of the American Presbyterian clergyman Robert Warren Anthony (1880-1960, Princeton Class of 1902).

The President of the University is charged with the general supervision of the interests of the University and with special oversight of the departments of instruction. This collection consists of the collected reports to the President prepared annually by each academic department and administrative office.

Charles Trueman Lanham was a life soldier who retired as a general and was also friends with Hemingway. The papers consist of Xerox copies of correspondence between Lanham and Hemingway, a chronology of his time in World War II, correspondence about Hemingway, and a draft of Carlos Baker's biography of Hemingway.

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

William O. Baker (1915-2005) was a prominent research chemist, head of Bell Laboratories, and a frequent advisor to the government on scientific affairs and technology. His government service spanned from the Truman administration through the Bush administration and focused on intelligence gathering and national security issues. Baker's papers document his government service beginning with President Eisenhower, as well as his career at Bell Labs, and include correspondence, writings, and reports.

Henry R. Labouisse (1904-1987) was a distinguished American diplomat and international public servant. He served as director of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) from 1954 to 1958 and as executive director of the United Nations Children's Fund (UNICEF) from 1965 to 1979. He also served as a United States government official working on the formation and implementation of foreign economic policies during World War II and the 1960s. Labouisse's papers document his career with the United Nations and with the State Department and include correspondence, speeches and publications, as well as biographical and genealogical material.