The Allied Mission to Observe Greek Elections was established when on September 19, 1945 the Governments of Britain, France, and the United States accepted the Greek Government's invitation to send observers for the general elections and plebiscite to be held in 1946. The collection consists of correspondence, circulars, memos, press extracts, and and maps, including one annotated map depicting the locations of headquarters among the country.

Consists of the records (1760-1974) of a large business conglomerate in northern Mexico founded by Pedro R. Prieto and owned by branches of the Prieto family, including Maíz family members, for three generations.

Consists of approximately 701 flat works from the collections of the Princeton University Art Museum, temporarily transferred to the Princeton University Library for use in Princeton University courses during the Spring 2023 semester.

Consists of several hundred print photographs (most are captioned) primarily from various French news outlets and agencies documenting people and events of numerous countries and geographic regions spanning the mid to late 20th century.

The papers comprise documents relating to all periods of the life of Kurt Gödel, foremost mathematical logician of the twentieth century, including scientific correspondence, notebooks, drafts, unpublished manuscripts, academic, legal, and financial records, and all manner of loose notes and memoranda.

Consists of 108 letters by Mencken to Dent Smith between the years 1938 and 1945, with Smith's side of the correspondence present in carbon copies.

Consists of 110 letters by influential magazine editor and critic H. L. Mencken to David Warren Ryder, a San Francisco area journalist, written mainly from Baltimore and New York between the years 1922 and 1947.

William Byler was Executive Director of the Association on American Indian Affairs (AAIA) from 1962 to 1980. After leaving AAIA, Byler continued advocating for the Native American community, first at Gerard, Byler and Associates and later at William Byler Associates. Byler's papers document his work on behalf of the Native American community after leaving AAIA. The papers include legal memoranda, draft and final agreements between Native American communities and companies or government agencies, and court documents, as well as topical files of related legislation and reports on the issues.

Consists of research files, primarily government records, of scholar and author Jacques Roumani (1944-2016) on Libya during the period of Italian colonization.

Consists of a photograph album, loose photographs, and clippings belonging to Robert J. Sommers (1881-1972), primarily documenting his work as a highway engineer in Alaska in the late 1920s, as well as some materials related to his personal life and career as a civil engineer and businessman involved in construction. Of note is a photograph album documenting a tour of Alaska made in 1928 by Sommers with Governor George A. Parks and Major Malcolm Elliott.

Consists of scrapbooks of tearsheets and clippings, original artwork in pencil and in pen and ink, correspondence, financial documents, periodicals, permission agreements, and contracts spanning Henry Martin's career as a cartoonist and illustrator.

James Ward Smith enrolled at Princeton University in 1934, first graduating with the Class of 1938 before proceeding with graduate studies in Princeton's Department of Philosophy. Following his military service during WWII, Smith returned to Princeton to begin a long career as Professor of Philosophy. The collection is comprised of letters written by Smith to his parents from September, 1934, when Smith entered Princeton, to his discharge from the Navy in 1946.

This collection contains Chester Kerr's early papers on book publishing. It documents his involvement with Atlantic Monthly Press and his employment at Reynal and Hitchcock. It also documents Kerr's work with the United States International Book Association, a short-lived non-profit organization founded in 1945 and dedicated to addressing the issues surrounding international book trade and exports.

Gillett Good Griffin, a curator of Pre-Columbian collections at the Princeton University Art Museum from 1967 to 2005, spurred dynamic growth in the museum's collections of art of the ancient Americas. The Gillett G. Griffin Papers reflect Griffin's personal life and relationships as well as his professional work and his donation of objects to the Princeton University Art Museum.

Harrison Freeman Matthews Sr. (1899-1986) was a U.S. diplomat and career ambassador. This collection consists of correspondence, a draft of his memoirs, photographs, clippings, films and miscellaneous papers. It includes correspondence with Elizabeth Luke Matthews and a diary she kept during a visit to her husband in Vichy, France in 1940-42.

The collection contains correspondence pertaining to Princeton University and personal correspondence of Jacob Newton Beam (Princeton Class of 1896, professor of German, 1899-1927). Of particular note is a file of letters from his son, Jacob Dyneley Beam (Princeton Class of 1929), written while he was serving at the American embassies in London, Germany, the Soviet Union, and Indonesia. The collection also includes Jacob N. Beam's lectures notes and publications.

The papers of Lincoln MacVeagh (1890-1972) relate to his diplomatic career as Minister to Greece (1933-1942) and Ambassador to the exiled Greek and Yugoslav Governments in Cairo (1943-1944) and his return to Athens as Ambassador to Greece (1944-1947). The papers contain typed transcripts of portions of diaries during much of the above described period (with the exclusion of personal and family matters found in the original diaries). The papers also contain copies of correspondence between Ambassador MacVeagh and President Franklin D. Roosevelt (1932-1945) from the National Archives and the Roosevelt Library as well as dispatches and telegrams from MacVeagh to the State Department (1933-1940) which relate primarily to political and diplomatic events in Greece and Yugoslavia.

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.

George Hafstad was a plant pathologist and a field technician with the U.S. Rubber Development Corporation in Brazil from 1943 to 1945. The George E. Hafstad Papers include a diary, several technician reports, and a folder of photographs from Hafstad's time as a field technician with the U.S. Rubber Development Corporation Amazon Division.