Consists of selected manuscripts, correspondence, documents, portraits, and other items created by or about United States President James Madison (Class of 1771) and Dolley Madison, collected by Jasper E. Crane (Class of 1901).

Consists mainly of professional and personal correspondence, some documents, and printed matter of Joseph Miller, a nineteenth-century English civil engineer primarily concerned with the construction of steam engines and other machinery for naval vessels.

Consists of letters and miscellanea of the educator, merchant, and first secretary of the Continental Congress Charles Thomson (1729-1824).

Consists of the personal papers of Philadelphia author, businessman, and philanthropist Harrison S. Morris.

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.

John James Audubon (1785-1851) was a nineteenth-century ornithologist, artist, and naturalist who published his illustrations of American birds and quadrupeds. This collection includes several original manuscripts, transcripts and photostats of manuscripts, correspondence of John James and Lucy Bakewell Audubon (originals and copies), and other printed materials related to Audubon, which have been assembled from various sources.

Consists primarily of family correspondence of John Henry Hobart, a bishop of the Protestant Episcopal Church.

The A. Jacobi Papers consists of offprints of writings and lectures, correspondence, memorials, and other miscellanea of the German physician, pediatrician, author, and first professor of children's diseases in the United States Abraham Jacobi (1830-1919).

The Department of Facilities at Princeton University is responsible for the construction, maintenance, renovation, and financial management of the buildings and properties owned by the university. The Department of Facilities records document the daily activities of the department and its numerous divisions through blueprints, photographs, correspondence, memos, sketches, contracts, ledgers, tax returns, incorporation papers, by-laws, annual reports, financial statements, newspaper clippings, booklets, and meeting minutes.

Consists of selected correspondence and documents of Johann Wolfgang von Goethe, the noted German poet and dramatist, author of Faust.

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 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 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.

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.

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 collection documents the career of Richard Rush (Princeton Class of 1797) as lawyer, statesman, and diplomat, emphasizing diplomatic negotiations between the United States and Great Britain while he was minister to Great Britain (1817-1825) and between the United States and France when he was minister to France (1847-1849), as well as his successful efforts (1836-1838) in securing the Smithsonian bequest, which was used to establish the Smithsonian Institution. The papers of Richard Rush constitute the larger part of the collection; letters of his father, Benjamin Rush, M.D. (Princeton Class of 1760), and papers of his son, Benjamin Rush (Princeton Class of 1829, constitute the other major groups of papers in this family archive.

The papers of William A. Eddy (1896-1962), educator, diplomat, minister to Saudi Arabia, intelligence agent, and college president, focus on his presidency of Hobart College (1936-1941), his work in U.S. - Middle East policy, and his family life in the period from 1917-1962. The holdings of his personal and family correspondence is extensive. The collection contains all correspondence from his term as president of Hobart College, 1936-1941. Many military documents are included, especially in the years 1941-1946 (the planning of the North African landings, the FDR/Ibn Saud meeting, the Treaty of the Yemen). There are many geneological papers and letters from Eddy's relatives concerning American missionary work in the Middle East. There are numerous publications concerning 18th C. English literature, religious and civic duties, U.S. Foreign policy re Israel and the Arabs, and sociological accounts of the Middle East. The collection is composed of personal/professional correspondence, documents, diaries and notebooks, addresses, publications, manuscripts of Eddy's books and articles (including unpublished MSs), scrapbooks, photographs, negatives, and memorabilia.

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.

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.

The Princeton University Library Collection of Historical Subject Files, Grounds and Buildings contains information relating to the buildings, grounds, and architects of Princeton University. The collection also includes information on the development of the campus and the various chronologies of construction and land acquisition that have been gathered.