Consists of correspondence, drafts, journals, and notebooks of Iranian literary scholar, diplomat, and physician, Qāsim Ghanī.

Consists primarily of the issue and correspondence files of the independent literary journal of the same name that was founded in 1943 by Warren Carrier, and co-edited and published from 1944-1999 by the husband and wife team of poet and former Princeton professor Theodore (Ted) and editor and author Renée Weiss. Also present in the collection are manuscripts of, and associated material from, eleven of Theodore Weiss's thirteen published books of poetry.

Consists of letters to English curator R. A. Cecil primarily concerning the writing and publication of books about the Trollopes.

The Radio Broadcasting Collection consists of typescripts of scripts for "The Cavalcade of America" and "The Bookman" as well as promotional material for the major radio networks, such as ABC, CBS, NBC, the Mutual Broadcasting System, and the Municipal Broadcasting System (WNYC). Included is material regarding the coverage of news during the latter years of World War II and copies of clippings about the Orson Welles broadcast of "The War of the Worlds" in 1938.

The Radio Scripts Collection consists of typescripts of scripts for various radio programs such as "The Cavalcade of America" (represented by the most scripts), "The Eternal Light," "Books and Authors," "What's New in Books," "Pepper Young's Family," "The Goldbergs," and others.

Consists of personal and working papers of Mexican diplomat Rafael Fuentes.

Ragnar Nurkse (1907-1959) was a leading scholar of international economics, international finance and economic development. He served in the League of Nations from 1934 to 1945 and taught at Columbia University from 1945 to 1958. Nurse's papers document his scholarly work at both the League of Nations and Columbia, and includes his research notes, drafts of articles and books, research materials and a small amount of correspondence.

Ralph Barton Perry was a member of the Princeton University Class of 1896, a Harvard Philosophy Professor, and a Pulitzer-Prize winning writer producing works on philosophy, history, and politics in his lifetime. The Ralph Barton Perry Papers consist of correspondence, speeches, clippings, and other materials documenting Ralph Barton Perry's life as an alumnus of the Princeton Class of 1896.

Raymond Blaine Fosdick (1883-1972) served as Under Secretary General for the League of Nations (1919-1920) and as President of the Rockefeller Foundation (1936-1948). The bulk of the collection consists of correspondence related to military life during World War I, the formation and activities of the League of Nations, and the administration of the Rockefeller Foundation in the 1920s through 1940s. The collection also contains various writings and personal memorabilia.

Raymond Holden was a noted author and publisher, who worked for a variety of publications, including the New Yorker, Fortune, Newsweek, and Reader's Digest. His papers include various copies and notes from his own works, correspondence with friends, some work of other people, and assorted documents.

Consists of 73 letters (1925-1961) by English author and literary critic Raymond Mortimer to his life-long friend Edward Sackville-West, both members of the "Bloomsbury Group."

The collection contains 120 letters, which is mostly personal correspondence, by English novelist and poet R. D. Blackmore.

The Reginald Lawrence Papers consists primarily of typescripts of plays Lawrence (Princeton Class of 1921) wrote for theater, film, and television, as well as short stories, poetry, outlines and notes for various projects, some letters, photographs, and newspaper clippings.

This collection consists of correspondence, writings (poetry and prose), notebooks, photographs, and printed materials.

This collection contains ephemera concerning religious issues and events in Brazil, published between 1899 and 2002.

This collection contains materials published and / or distributed in Cuba by Protestant churches and organizations, and issued between 1926 and 1999.

This collection contains materials published and/or distributed in Cuba by the Catholic Church and affiliated organizations, and issued between 1904 and 1998.

This collection of religious ephemera comprises materials from all over Latin America, with the exception of Cuba. While the date range covered in this extensive collection spans 165 years, the bulk of the items was published between 1960 and 2010.

This microfilm consists primarily of pamphlets published in Peru relating to church and religion. Themes covered include history, indigenous peoples, internal church affairs, youth, social issues, politics, biographies and art. The bulk of the material was published during the 1990s.

Consists of poetry manuscripts, drawings, and correspondence of the American poet R. Ellsworth Larsson (1901- ).