John Cleve Green was a Princeton-area businessman and investor who was a notable benefactor of Princeton College primarily during the administration of President James McCosh. The John Cleve Green Collection consists of research materials compiled regarding the life of John Cleve Green and his contributions to Princeton University.

John "Judge" Cobb Cooper (1887-1967) was a Princeton University graduate and a pioneer in the field of Aerospace Law. The collection is composed of correspondence and other materials pertaining to Cooper's activities as Curator of Class Records and as an active member of the Friends of the Library and the Graduate Council.

The John D. Davies Collection on Hobey Baker, located in the University Archives, contains research materials gathered by Davies for the publication, The Legend of Hobey Baker (Little, Brown & Company, 1966). These papers contain correspondence, research notes, manuscript drafts, photographs and printed material pertaining to Hobey A. H. Baker's career as an athlete at St. Paul's Preparatory School, at Princeton University, and as a member of the American Expeditionary Force during World War I. Baker died in an airplane crash in 1918.

John Doar (1921-2014) was a lawyer who worked for the Civil Rights Division of the Department of Justice (1960-1967) and was chief counsel to the House Judiciary Committee investigating the Watergate scandal (1973-1974). He also served as president of the New York City Board of Education (1968-1969) and as president of the Bedford-Stuyvesant Development and Services Corporation (1967-1973). The collection primarily documents Doar's tenure with the Civil Rights Division in the form of court records, investigation files, correspondence, and notes, though materials from Doar's time on the Watergate impeachment inquiry committee and on the Board of Education are also present. To a lesser extent, the collection is composed of records from Doar's work for the Bedford-Stuyvesant Corporation and his private law practice.

Consists of writings, editorial files, correspondence, teaching materials, and other professional working files of Irish poet John Ennis (1944- ), including drafts of his published poetry and unpublished work from the late 1960s through 2016, editorial files related to anthologies of Irish and Canadian poetry he edited between 2002 and 2009, and materials documenting the activities of the Irish arts organization Poetry Ireland and its journal Poetry Ireland Review from its inception in 1978 through the 1990s.

John E. Rovensky (1880-1970) was a banker and economist. As a banker, he held the position of vice president at the National Bank of Commerce, Bank of America, and City Bank. As an economist, he was a member of the Economists' National Committee on Monetary Policy, the National Monetary Association, and the Stable Money Association. Rovensky's papers document his work as an economist, including his tenure as president of the Stable Money Association in 1927. The papers are comprised of correspondence, offprints, and newspaper clippings.

John Foster Dulles (1888-1959), was a graduate of the Princeton Class of 1908 who served as Secretary of State of the United States for President Dwight D. Eisenhower. The John Foster Dulles Collection consists of a small group of materials documenting Dulles' connection to Princeton, including materials on his undergraduate career and the Dulles Library.

John Foster Dulles (1888-1959), the fifty-third Secretary of State of the United States for President Dwight D. Eisenhower, had a long and distinguished public career with significant impact upon the formulation of United States foreign policies. He was especially involved with efforts to establish world peace after World War I, the role of the United States in world governance, and Cold War relations between the United States and the Soviet Union. The Dulles papers document his entire public career and his influence on the formation of United States foreign policy, especially for the period when he was Secretary of State, and include his correspondence files, as well as his writings, reports, and memorabilia.

Consists primarily of travel diaries, scrapbooks, and photograph albums composed by railroad industrialist John Insley Blair and his family. There is also a small selection of letters of Clinton Ledyard Blair regarding a fight over Woodrow Wilson's reforms at Princeton University and Blair's relationship with the University's Board of Trustees.

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 of correspondence, photographs, scrapbooks, memorabilia, and newspaper clippings of set designer John Koenig's life.

Consists of material by and about John Lott Phillips, a graduate of Princeton (1774), a clergyman of the Church of England, and a loyalist to the British Crown.

John Marshall Harlan (1899-1971), a distinguished lawyer and jurist, served on the U.S. 2nd Circuit Court of Appeals and the U.S. Supreme Court. Harlan's papers consist of legal materials, correspondence, writings, and personal papers that document his career as an attorney and a judge, especially the period when he was a Supreme Court Justice.

Consists chiefly of manuscripts and related material for two novels by American novelist John O'Hara: A Rage to Live (1949) and Ten North Frederick (1955).

John Peale Bishop (Princeton Class of 1917) was a noted author, poet, and editor. This collection consists of manuscripts, correspondence, documents, drawings, printed materials, and memorabilia of Bishop.

The John Q. Stewart Papers consists of articles, correspondence, conference material, printed material, student papers, and other miscellanea of the American astrophysicist and educator John Quincy Stewart (1894-1972).

Consists primarily of newspaper clippings, study materials, and other printed matter of Find (Princeton Class of 1922) reflecting his interests in the Far East, Chinese languages and education, the Soviet Union, the United States government, and the Vietnam conflict.

The John Van Antwerp MacMurray Papers describe the public and personal lives of John Van Antwerp MacMurray (1881-1960), diplomat and specialist in Far Eastern Affairs, and his father, Junius Wilson MacMurray (1843-1898).

Consists of selected letters and a manuscript of John Von Neumann, one of the 20th century's preeminent mathematicians, and an early pioneer in fields such as game theory, nuclear deterrence, and modern computing.

Consists of correspondence, manuscripts, and documents of members of the Joline family of Princeton, New Jersey.

Consists of correspondence and documents of Jonathan Belcher, dating from his early years in Massachusetts to his days as colonial governor of New Jersey.

Jonathan Belcher, was a merchant and colonial governor of the Provinces of Massachusetts, New Hampshire, and New Jersey and was instrumental in the founding of the College of New Jersey (now Princeton). The Jonathan Belcher Collection consists of collected research materials regarding Jonathan Belcher's relation to the history of Princeton University and consist of correspondence, articles, clippings, and copies of original materials from Belcher collections held at Princeton and elsewhere.

Consists of the writings, correspondence, photographs, and personal papers of the Mexican novelist, journalist, and playwright Jorge Ibargüengoitia as well as writings about him by others and adaptations and translations of his work.

The José Bianco Papers consists of notes and correspondence of the Argentine editor, author, and translator José Bianco, as well as a small selection of writings by others and audio recordings of Cuban poets José Lezama Lima and Nicolás Guillén reading their poetry.

The José Donoso Papers consists of writings, notebooks, correspondence, and other miscellanea of the Chilean writer José Donoso (1924-1996).

Consists of the papers (circa 1940s-2010s) of Mexican poet, essayist, novelist and short story writer, José Emilio Pacheco. Materials include notebooks, diaries and journals, writings, correspondence, printed materials, and other items.

The papers of Joseph A. Robinson, Princeton Class of 1931, are comprised almost entirely of Robinson's letters to his family during the years 1941-1952, when Robinson worked in the Office of War Information and the Foreign Service. The collection includes some drafts and copies of his work, radio scripts and newspaper clippings, as well as photographs, currency, invitations and postcards. Some of the later letters cover portions of his term in the Foreign Service, though with significant gaps. The most fully documented year is 1946. Robinson was involved in the establishment of informational and cultural affairs agencies in Saigon and Warsaw, and describes the internal politics and external challenges of creating an American news presence overseas.

Joseph Coy Green (Princeton Class of 1908) served in a number of State Department positions, including his appointment as special representative to the International Institute of Agriculture in Rome (1931), chairman of the Armaments Commission (1944-1946), member of the U.S. Mission to observe the elections in Greece (1946), director of the Foreign Service Board of Examiners, and ambassador to Jordan (1952-1953). Included in this collection are correspondence, journals, scrapbooks, diaries, reports, notes, and printed matter.

Joseph Frank (1918-2013) was an American literary scholar best known for his five-volume biography of Russian novelist Fyodor Dostoyevsky, which he began in the early 1970s and completed in 2002. The collection consists of his personal and professional correspondence, including with Elizabeth Bishop, Yves Bonnefoy, Pierre Bourdieu, Ralph Ellison, Carlos Fuentes, Irving Howe, James Laughlin, Richard W. B. Lewis, Mary McCarthy, Allen Tate, and other writers, artists, and academics, as well as some family correspondence, writings, personal documents, and printed materials.

Joseph Jefferson (1829-1905) was an American actor and author. His collection consists of biographical newspaper clippings, 2 copies of his Autobiography, theatrical criticism and approbation, and clippings on family matters.

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

José Martínez Sotomayor was a Mexican lawyer, judge, and writer who published novels, short stories, and nonfiction. His personal papers includes correspondence and autograph and typescript manuscripts of three of Martínez Sotomayor's books.

Consists of a small group of papers of J. Paul Baldeagle (Princeton University Class of 1923), a South Dakota-born Sioux, who was a schoolteacher for 35 years at William MacFarland High School in Bordentown, New Jersey, as well as a Native American rights activist.

Contains the personal and working papers of Juan García Ponce, a Mexican novelist, dramatist, short story writer, and critic.

Juan Gelman (1930-2014) was an Argentine poet, translator, journalist, and human rights activist. His papers contain handwritten, typewritten, and printouts of his writings, correspondence, notes, research files, awards and certificates, and personal photographs. A significant portion of the papers feature analog and born-digital investigative files relating to human rights investigations and campaigns Gelman conducted with his spouse, Mara La Madrid, on the forced kidnapping and death of his son and pregnant daughter-in-law, Marcelo Gelman and María Claudia García Irureta Goyena. Also included are files on his search to find his missing granddaughter, Macarena Gelman. Additional materials consist of original drafts and documents related to Juan Gelman's writing; letters; publishing contracts; documents about Juan Gelman's work as a translator; materials related to the campaign to lift the ban on Juan Gelman's entry into Argentina and his return to Buenos Aires; newspaper and magazine clippings related to the ban on Juan Gelman's entry into Argentina, as well as celebrating his return; materials related to Marcelo and Paulina, including photographs of Gelman and the family; works by other writers; and audio cassettes.

Julia Burt Atteberry was the daughter of Maxwell Struthers Burt (Princeton Class of 1904) and Katharine Newlin Burt, who were both writers and established one of the first "dude" ranches in the West. This collection consists of correspondence between various members of the Burt family and some of their manuscripts, miscellaneous correspondence, documents, and journals.

Julia Marlowe (1866-1950), who was also known as Sarah Frances Frost, was an American actress and Shakespearean performer. Her collection consists chiefly of letters to Ida Rissland Perscheid. Also included are photographs of both Marlowe and her husband, E. H. Sothern, articles by and about them, memorabilia, and scrapbooks of newspaper clippings.

Consists of works, correspondence, documents, notes, photographs, and printed matter of Julian Boyd, Princeton University Librarian (1940-1952) and professor of history, and the founding editor of the Papers of Thomas Jefferson publishing project.

Consists of correspondence, manuscripts, photographs, and notes, both published and unpublished, of American author, journalist, enologist, and gastronome Julian Street, ranging from his early reporter and drama critic days (1900-1910) up to the page of Table Topics he was working on just before his death (1947).

The Julio Cortázar Papers consists of the manuscripts, notes, and notebooks of the Argentine novelist and short story writer Julio Cortázar (1914-1984). These papers primarily contain unpublished prose and poetry, as well as some manuscripts of published materials. Though Cortázar is not generally thought of as a poet, poetry is heavily represented in the collection, including a notebook of poems he wrote at the age of 12 (1927). There are also Spanish translations of some of Jean Cocteau's poetry, and lecture notes from two courses that Cortázar taught. Furthermore, the papers contain a small selection of quotations collected from the work of others, and notebooks that include an assortment of prose, poetry, and notes.

The collection contains photographic negatives and prints of Princeton University campus life, taken by J. Wayman Williams for the Bric-a-Brac yearbook and the Princeton Alumni Weekly during the years 1943-1944 and 1947-1950. The collection is still being processed and the negatives are not available to view in the reading room. The negatives are in a queue for digitization.

Consists of personal papers of Kaiē Tsitselē, Greek author and translator, who contributed to the dissemination of the Modern Greek literature outside Greece. The collection consists of manuscripts of some of Tsitselē's novels, short stories, radio scripts, and book reviews along with her English translations of Greek works. Correspondence with her friends and colleagues completes the collection.

Consists of an open collection of photographs depicting Greek antiquities, portraits, and landscapes by Karl Eller.

The Karl L. Rankin Papers consist of correspondence, writings, memoranda, diaries, scrapbooks, and photo albums kept by Mr. Rankin which span his lifetime and career as an ambassador.

Karl S. Twitchell was an American mining engineer who conducted extensive surveys in the Middle East, Europe, and South America between 1915 and the 1950s. His papers document the span of his career, particularly his interest in the Middle East, and include correspondence, journals, notes, reports, writings, topical files, photographs, and maps. Personal documents and correspondence with family and associates are also contained.

Consists of selected papers of Rockey (Princeton Class of 1916), including memoranda, correspondence, and reports from the period when he served as chairman (1942-1944) of the Navy Price Adjustment Board on the development and administration of defense contract renegotiations during World War II and post-war economic policy and planning.

Consists of papers of Kenneth McKenzie (1870-1949), a former professor of Romance languages at Princeton, relating to fables.

Consists primarily of letters by the American historical novelist Kenneth Roberts to his Doubleday editor, Malcolm Johnson.

Kenneth Sherman Clark was a member of the Princeton Class of 1905 and an active participant in Triangle Club during his time at Princeton. Consists of the personal papers and sheet music of Kenneth Sherman Clark spanning his time at Princeton as well as his later career.

The collection consists of letters by American educator and playwright Louis Ellsworth Laflin (Princeton Class of 1924) to George R. Kernodle (a friend from Yale Drama School), written over thirty-three years. Also included are Laflin's notes and papers on Asian/Indian, Egyptian, and Greek drama, copies of six plays written by him, and copies of two essays on the founding and history of Princeton's Theatre Intime.