El archivo de Elena Garro contiene manuscritos, correspondencia, cuadernos, diarios, fotografías, material impreso y un diario de la escritora mexicana Elena Garro (1916-1998). También se incluye correspondencia y documentos personales de la hija de Garro, la poeta Helena Paz Garro (1939-2014).

La colección consiste de borradores y pruebas de la poesía de Idea Vilariño; correspondencia con sus hermanas/os Numen, Poema, Azul y Alma; fotografías personales de la familia; cuadernos de investigación; material impreso sobre Vilariño y una colección anotada de libros sobre crítica literaria y otros temas, como Shakespeare, Homero, Rubén Darío y Octavio Paz, entre otros.

La colección consiste en manuscritos de las obras literarias de Jorge Díaz (particularmente obras teatrales, pero también incluye narrativa y poesía), guiones de radio y televisión, traducciones, correspondencia, fotografías, archivos digitales, documentos personales, y material impreso relacionado a su trabajo.

La colección consiste de escritos, correspondencia y dibujos de la novelista, cuentista y poeta argentina Silvina Ocampo.

Arnold A. Rogow (1924-2006) was a political scientist, author, and psychotherapist. His main area of research was psychological explanations for politics, especially the decision-making of leaders, notably James Forrestal and Alexander Hamilton. The Rogow Papers are composed of materials he collected for his book James Forrestal: A Study of Personality, Politics, and Policy (The Macmillan Press: New York, 1963) and include correspondence with individuals who knew Forrestal, Rogow's notes, and other research materials.

Consists of material by and about Philip Wylie collected by Arthur and Sylvia Mandy during the course of their friendship with the American writer.

The Arthur Cort Holden Papers consists chiefly Holden's personal and professional papers, accumulated during his life (1890-1993) as an architect and active Princeton University alumnus. Also included are photographs, the papers of friends and family members, and miscellaneous printed matter dating from the 1840s to the 1990s.

Arthur Cort Holden was a member of the Princeton University Class of 1912. He went on to earn a graduate degree in architecture from Cornell University, and joined the New York City firm of McKim, Mead, and White, later forming his own firm and advising Frank Lloyd Wright on the design of the Guggenheim Museum in 1949. Consists of personal papers and correspondence of Arthur Cort Holden.

Arthur Cyrus Warner (1918-2007) was an activist in the gay liberation movement, focusing his efforts on legal reform to protect the civil liberties of the gay community. Warner's papers document his involvement in legal reform and other issues pertaining to gay rights. The papers largely consist of legislative and court documents about cases affecting gay civil liberties, and related memoranda, correspondence, and writings.

Arthur Friedman is an American collector in music and theater. His collection consists of bound scrapbooks of opera programs and playbills for theater and concert performances covering eighty years of regular attendance by Friedman in New York City at the Metropolitan Opera House, Carnegie Hall, Town Hall, and various legitimate theaters.

The Arthur Garfield Hays Papers consist of correspondence, case files, speeches, articles, books, news clippings, and photos which document his career as a New York City lawyer and general counsel for the ACLU.

Contains selected papers, photographs, and memorabilia of Arthur H. Thornhill, Jr., Princeton Class of 1946, pertaining to his publishing career at Little, Brown and Company and his involvement in a variety of organizations and activities within the publishing industry. Also present in the collection is a limited amount of material from Thornhill's father, Arthur H. Thornhill, Sr., who preceded his son as president of Little, Brown and Company.

Arthur Krock (1886-1974) had a long and distinguished career as a journalist, working for much of his career as Washington correspondent and columnist for The New York Times. His column "In the Nation" was noted for its depth of information and analysis, especially on American politics. The Krock papers document his journalism career, especially with The New York Times, and include his correspondence, his writings, and biographical materials.

Consists chiefly of letters and photographs of Arthur Machen, the Welsh-born writer called "the Apostle of Wonder" because of his mastery of the English language and outstanding creation of supernatural fiction.

Arthur Mendel was a prominent music scholar in the twentieth century and a professor at Princeton University. The collection contains correspondence with professional colleagues, course notes, musical notes, scrapbooks, and clippings. There is also additional unprocessed material from Mendel's time at Princeton.

Consists of works, correspondence, and memorabilia of Princeton School of Engineering dean Arthur M. Greene, as well as papers of others about him.

Consists of correspondence, manuscripts, and printed material relating to the Fitzgerald biography The Far Side of Paradise (1951) by the literary critic, editor, biographer, author, and educator Arthur Mizener.

Arthur S. Link was an author, editor, scholar and publisher, but is best known as the leading historian on Woodrow Wilson and for his leadership over the publication of Wilson's papers. This collection consists of the personal papers of Link, which includes articles, correspondence, notes, office files, and presidency records of the American Historical Association.

This collection consists of letters to Arturo Lagorio, Argentine poet and author, by various Latin American and Spanish writers, including Samuel Eichelbaum, Maria Granata, Nicolas Olivari, and Cesar Tiempo.

The Records of the Association on American Indian Affairs document the corporate life of an influential and resilient player in the history of twentieth-century Native American advocacy. From its formation by non-Indians in New York in 1922 to its re-establishment in South Dakota in 1995 under a wholly Indian administration, the AAIA has defended the rights and promoted the welfare of Native Americans and, in this process, has shaped the views of their fellow citizens. The AAIA has waged innumerable battles over the years, touching on the material and spiritual well-being of Indians in every state of the Union: from the right of Native Americans to control their resources to their right to worship freely; from their right to federal trusteeship to their right to self-determination. The evolving nature of this struggle, in terms of conception and execution; the environment in which it was waged, both within and without the AAIA; the parade of men and women who figured in it; and the relationships among them can all be found in the abundant and insightful records which constitute these Records. The correspondence, minutes, reports, articles, clippings, and other documents in the collection, augmented by photographic and audiovisual material, represent a window not only on the AAIA but on the entities and personalities with which it interacted. While its vision has co-existed with others, and while it has been far from alone in its contribution to Indian life, no consideration of twentieth-century Native American affairs can disregard its arduous and, for the most part, fruitful work.