This collection consists of correspondence of the New York City literary agency Harold Ober Associates, Inc. and its three London affiliates. Established by Harold Ober (1881-1959) in the 1920s, the agency quickly grew in size and reputation, and has been considered one of the leading representatives for American and British writers in the world. The correspondence includes letters between the agency or affiliates and clients, editors, publishers, and other agents. Also included are other organizational files, such as date books and financial ledgers.

Henry Holt was a prominent publisher in the nineteenth and twentieth centuries. The collection consists of correspondence and manuscripts of authors published by the company, various bookkeeping records, and a collection of photographs, publicity materials, and clippings about Robert Frost.

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

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.

Consists of over 200 letters by American authors to to the American editor and author Arthur Bartlett Maurice (1873-1946, Princeton Class of 1894).

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 a prominent figure 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.