The collection consists of editorial correspondence and some business material of the American publisher.

El archivo de Alma Concepción consiste principalmente en 43 álbumes de la bailarina, educadora y coreógrafa puertorriqueña Alma Concepción, que contienen fotografías, recortes, programas, cartas, tarjetas postales, folletos, material de difusión y memorabilia. También incluye escritos de Alma Concepción, material de investigación, imágenes digitales, recuerdos, afiches y partituras musicales.

Contiene tres fotos de Alma Concepción de niña, una con su madre Ada Suárez, una foto de Alma Concepción con algunas de sus bailarinas, cuatro afiches relacionados con varios eventos y un diploma concedido a Alma Concepción de la Universidad Autonoma de Madrid.

Contiene recortes y programas relacionados con la infancia de Alma Concepción, la Academia Figueroa (música) y el Ballets de San Juan.

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).

Una fotografía con otras dos parejas, hacia 1930. Una fotografía con Helena Paz Garro y otras personas, fechada en "1952 Karouzawa (Japón)". Una fotografía con la pareja sentada, sin fecha.

Una fotografía de Elena Garro con Pablo Picasso y otras personas, sin fecha [hacia finales de la década de 1940]; se ve a Helena Paz Garro detrás de Picasso, cuando era una niña de unos 9-10 años. Dos fotografías de Elena Garro en el verano de 1954 en casa de Suzanne de Tézenas, en el lago Lemán; en una de ellas aparece Garro con André Pieyre de Mandiargues y Guy Dumur, y en la otra con Bona Tibertelli de Pisis (Bona de Mandiargues). Tres fotografías de Hector García, Foto Press, México. Una está fechada el 23 de junio de 1967 y es de una protesta que Elena Garro organizó en favor de Régis Debray frente a la Embajada de Bolivia, Ciudad de México, México. Otras dos sin fecha, de hacia 1967 o 1968, una incluye a Elena Poniatowska. También incluye una fotografía de Roberto Fernández Retamar con nota autógrafa al dorso, circa 1967.

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.

Agenda con actividad semanal y anotaciones varias. Contiene poesías manuscritas no incluidas en su Poesía completa con fecha de 1952 a 2003. Incluye un poema fechado en 1941, 8 hojas a máquina con poemas, 2 invitaciones a eventos, un email, fotocopia de un artículo de prensa y dos recortes de hojas manuscritas.

Los archivos adicionales incluyen libros de la biblioteca personal de Vilariño, principalmente libros anotados escritos por otros autores como Narciso Pizarro, Octavio Paz, Pablo Rocca, José Santos Gónzalez Vera, Ernesto Sábato, Daniel Vidart, Mario Benedetti y Rubén Dário. También incluye libros anotados por y sobre la autora; dos poemas escritos a mano firmados por Vilariño; una carta de la hermana de Vilariño, Poema; y un cuaderno de poemas inéditos escritos por Jorge Liberati. La descripción se basa principalmente en la descripción del comerciante.

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.

Contiene fotografías familiares, incluyendo fotos de Jorge Díaz, sus padres, amigos, y otros familiares.

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.

Consists of the writings, notes, diaries, calendars, ledgers, and miscellanea of the German novelist, poet, and critic Arthur Gläser (b. 1895 ).

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.

Series 6: Later Additions contains Woodrow Wilson Foundation Annual Reports, Link's correspondence pre- and post-Princeton career, and some additional materials.