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.

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.

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.