The Cook Labs records, which date from 1939-2002, document the activities of audio engineer Emory Cook and his label Cook Labs. The contents include business records, materials relating to recording artists, photographs, and production materials, as well as phonograph records, master recordings and unpublished recordings produced by or associated with the Cook Labs label. The collection also contains two interviews conducted with Emory Cook in 1990: one by Jeff Place and one by Anthony Seeger and Nicholas Spitzer. There are several physical objects relating to Cook Labs including a bag of powdered vinyl, a binaural playing arm, and a condenser microphone.

The William J. Powell Collection consists of materials concerning the career and personal life of African-American entrepreneur and pilot William J. Powell, including his service in the American Expeditionary Forces (AEF) in World War I, his automobile business in Chicago, and his advocacy for African-American aviation as the founder of Craftsmen of Black Wings, Inc., author of Black Wings, and a primary organizer of the Bessie Coleman Aero Club and the "Five Blackbirds" demonstration team. Materials include identification and membership cards, flight logs and officer records, newspaper clippings, advertisements, and photographs.

The records of the Downtown Gallery date from 1824 to 1974 (bulk 1926-1969) and measure 109.56 linear feet. The records present a comprehensive portrait of a significant commercial gallery that operated as a successful business for more than forty years, representing major contemporary American artists and engendering appreciation for early American folk art. There is an unprocessed addition to this collection dating circa 1970 of a single financial/legal document.

Jack Mitchell (1925- 2013) was an acclaimed photographer who began chronicling the work of the Alvin Ailey American Dance Theater in 1961. Alvin Ailey (1931- 1989), one of the most influential African American choreographers of modern dance, dedicated himself and his dance company to creating ballets that not only accelerated the careers of young African American dancers, but also stole the attention of national and international audiences in displaying the racial perspective of dance in the African American experience. This collection serves as Mitchell's documentation of the dance company's evolution while capturing the true idiosyncrasies and physicality of movement through still images. Through Alvin Ailey and Jack Mitchell's partnership, they were able to collaborate and produce a unique production of art, fusing the meaning and movements of dance and the techniques of photography.

The records of nationally renowned Boston, Massachussetts, stained glass design company, Wilbur H. Burnham Studios, measure 35.9 linear feet and date from circa 1904-1991. The majority of the collection consists of project files for the studio's stained glass window contracts throughout the United States from the 1920s-1980s. In addition to project files, records include biographical material for the owners, correspondence relating to personal and studio business, general business and financial records, writings such as published articles by Wilbur H. Burnham, scrapbooks and other printed material documenting the history of the company, artwork including extensive watercolor design studies for stained glass, and photographic material.

The papers of New York artist, critic, historian, writer, art consultant and curator Walter Pach, measure 20.7 linear feet and date from 1857-1980. The collection documents Pach's promotion of modernism through his role in the landmark 1913 Armory Show, his relationships with artists and art-world figures and his extensive writings on art. Records include biographical material, correspondence with family, friends and colleagues including noted artists, handwritten and edited versions of manuscripts by Pach, diaries and journals, business records, printed material, scrapbooks, sketchbooks and artwork by Pach and others, and photographs of Pach and his family, friends, and colleagues. The collection also includes 12 linear feet of selections from Walter Pach's library.

The Macbeth Gallery records provide almost complete coverage of the gallery's operations from its inception in 1892 to its closing in 1953. Through extensive correspondence files, financial and inventory records, printed material, scrapbooks, reference and research material, and photographs of artists and works of art, the records document all aspects of the gallery's activities, charting William Macbeth's initial intention to lease his store "for the permanent exhibition and sale of American pictures" through over sixty years of success as a major New York firm devoted to American art. The collection measures 131.6 linear feet and dates from 1838 to 1968 with the bulk of the material dating from 1892 to 1953.

The Leo Castelli Gallery records measure 215.9 linear feet and 0.001 GB and date from circa 1880-2000, with the bulk of the materials dating from the gallery's founding in 1957 through Leo Castelli's death in 1999. The major influence of dealer Leo Castelli and his gallery on the development of mid-to-late twentieth century modern art in America is well-documented through business and scattered personal correspondence, administrative files, exhibition files, extensive artists' files and printed materials, posters, awards and recognitions, photographs, and sound and video recordings. Also included are records for the subsidiary firms of Castelli Graphics and Castelli/Sonnabend Tapes and Films.

The papers of architectural historian, author, critic, teacher, and museum director, Henry-Russell Hitchcock, date from 1919-1987 and measure 24.8 linear feet. Almost all of the collection is comprised of Hitchcock's correspondence files relating to academic research, teaching, curatorial interests, and professional associations. Letters are from prominent architectural historians, architects, artists, preservationists, museum directors and curators, and family and friends. Also found are two feet of writings by Hitchcock and others, scattered biographical information, printed material, and photographs of Hitchcock and architecture.

The Marcel Breuer papers, 1920-1986, contain biographical material, correspondence, business and financial records, interviews, notes, writings, sketches, project files, exhibition files, photographs, and printed material that document the career of architect and designer Marcel Breuer.