The papers of New York-based curator and art consultant Richard D. Marshall measure 15.8 linear feet and date from 1969-2014. The interviews, exhibitions and research files, client files, other professional files, printed material, photographic material of artwork, and electronic records primarily reflect Marshall's work outside his role at the Whitney Museum. The exhibition and research files make up the bulk of the collection and document his independent curatorial and writing projects on artists Jean-Michel Basquiat, Alexander Calder, Robert Mapplethorpe, Jack Pierson, and Ed Ruscha, as well as his role in building the Lever House Art Collection. Sound and video recordings are also found in the collection, primarily with interviews and exhibition and research material.

The records of the Richard York Gallery, a New York gallery specializing in American art from early 1800s to 1950, measure 79.3 linear feet and date from circa 1865-2005, with the bulk of the material dating from 1981 to 2004. Three-fourths of the records are artists' artwork files, documenting the sale and consignment of nearly 6,500 works of art. The gallery's activities are also recorded through correspondence, client files, gallery invoices, inventories, business and financial records, printed materials, scrapbooks, photographic materials of artwork, and estate records for the John Marin estate and Sergio Stella estate (Joseph Stella). An addition of 10.2 linear feet, dated circa 1865 to 2005, includes artists' files arranged alphabetically containing printed material, clippings, exhibition announcements, and scattered correspondence and financial documents.

The Samuel J. Wagstaff papers, circa 1932-1985 comprise 6.4 linear feet of correspondence, writings, miscellaneous records, printed material, and photographs documenting Wagstaff's professional and personal relationships with artists and photographers, his career as an art curator, and his position as an important collector of paintings and photographs. Correspondence with artists and others such as curators, arts organizations, galleries, and museums, reflects the diversity of contemporary American art and includes individuals associated with the abstract expressionist, Fluxus, pop, earth, conceptual, and minimalist art movements.

The collection documents over 5,270 artists who received awards from the National Endowment for the Arts national Visual Artists Fellowship Program and its companion regional programs from 1967 to 1997.

The papers of photographer Andres Serrano measure 2.8 linear feet and date from 1986 to 2013. The collection documents Serrano's work as a photographer through correspondence, writings, professional files, personal business records, and printed materials.

The records of Artists Talk on Art (ATOA) measure 64.4 linear feet and 43.9 terabytes and date from circa 1974-2018. The bulk of the records consist of extensive video and sound recordings of artists, critics, historians, dealers, curators and writers discussing contemporary issues in the American art world in hundreds of panel discussions, open screenings, and dialogues held in New York City from 1975 to 2016. A smaller group of records include administrative files, panel flyers, three scrapbooks, as well as photographs, slides, and negatives of panel discussions and participants.

The records of Henri Gallery, a Washington, D.C. gallery that showed painters from the Washington Color School and emerging artists, measure 55.4 linear feet and date from circa early 1900s, 1940 to 1996, with the bulk of the materials dating from 1957 to 1995. The gallery's relationship with artists and clients, exhibitions, sales, and other business is documented in alphabetical files containing a wide variety of materials, including correspondence, sales records, printed materials, photographs, slides, and motion picture film. Additional correspondence, newspaper clippings, 114 exhibition posters, scattered drawings, illustrated cards, and photographic materials are also found in the collection.

The Leo Castelli Gallery records measure 215.9 linear feet 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 Jamison Thomas Gallery records measure 27.2 linear feet and 0.001 Gb and date from 1940-2000, with the bulk of the records dating from 1980-1995, reflecting the years the Gallery operated in Portland Oregon. About 1/2 of the records consist of artists' files of artists represented by the gallery and artists of interest. Also found are administrative records, client and collector files, financial and legal records, exhibition files, and publicity files.

The records of Holly Solomon Gallery, a New York City gallery specializing in contemporary American art, measure 200.6 linear feet and date from circa 1948-2003. The gallery's activities are documented through dealer files, subject files, artists' files, inventories, sales and loan records, administrative and financial records, printed materials, photographic materials of artwork and exhibitions, sound, video, and film recordings, and scattered electronic records. Also found are records of the alternative space, 98 Greene Street Loft, as well as Holly Solomon's personal papers.