The records of New York City Grace Borgenicht Gallery date from circa 1953 to 1996 and measure 18.2 linear feet. The records include administrative files, correspondence, financial and legal records, exhibition files, printed material, two scrapbooks, and photographic negatives of artwork. The majority of the collection consists of artists' files.

The papers of abstract painter and teacher John Opper measure 1.4 linear feet and 0.057 GB and are dated 1926-2011. The papers contain both professional and personal corespondence, including letters from immediate family. Biographical materials consist of essential data including passports, birth and death certificates, and curricula vitae. Some geneological documents are in digital format. Personal business records relate to the artist's Bowery Street and Amagansett studios, and to art sales through the Grace Borgenicht Gallery. A scrapbook contains newspaper clippings. Additional clippings, group and solo exhibition catalogs and announcements documenting Opper's career, and galley sheets of a children's book illustrated by Opper are included among the printed material. Photographs are of Opper, his family, friends, and paintings. Digital photographs depict the artist and relatives. The collection also contains a few pen and ink drawings by Opper.

The records of New York art gallery Terry Dintenfass, Inc. date from 1947 to 1987, with the bulk of the collection dating from 1961 to 1983, and measure 22.1 linear feet. The records are comprised of administrative files, correspondence, exhibition files, artists' files, and financial records.

The Walter Rosenblum Collection is comprised of 7,396 silver gelatin negatives taken by noted photographer Walter Rosenblum (1919-2006) for New York art galleries, collectors and artists between 1945 and 1976. The collection reflects the art of his time and is particularly strong in American and European avant-garde, surreal and abstract works.

The papers of modernist painter and printmaker George Constant measure 4.6 linear feet and date from 1912-2007, with the bulk of the material dating from 1932-1978. They consist of biographical material, inventories of artwork, audio interviews and recorded statements on art, personal and business related correspondence, holiday cards, printed material, an exhibition related video recording, and photographs of Constant, his family and friends, and his work.

The papers of sculptor José de Rivera date from 1930 to 1991 and measure 5.6 linear feet. Found within the papers are biographical materials, letters, scattered personal business records, commission files, art work including four sketchbooks, printed material, and photographs. One of the commission files includes a motion picture film.

The Balcomb and Gertrude Greene papers, circa 1880s-2009, bulk circa 1905-1990, measure 9.8 linear feet. Balcomb Greene's career as a painter, educator, and writer - and to a lesser extent his personal life - is documented by biographical material, letters, subject files,writings, artwork, audio-visual recordings, printed material, and photographs. Documentation about sculptor Gertrude Greene, from 1926 until her death in 1956, consists of printed material, photographs, two letters to her, and a brief handwritten list of paintings and constructions.

The papers of art collectors, art patrons, and philanthropists Lawrence and Barbara Fleischman measure 4.9 linear feet and date from 1837 to 1984, with the bulk of the materials dating from 1935-1979. The papers are comprised mostly of correspondence with artists, museums, and arts organizations. Also found are scattered biographical materials, artists' autograph letters purchased by the Fleischmans, exhibition files, notes and writings, printed material, and photographs.

The Boris Mirski Gallery records measure 6.2 linear feet and date from 1936-2000, bulk 1945-1972. They include gallery administrative files; artist files including correspondence, exhibition and loan paperwork as well as photographic documentation of artwork; gallery correspondence; financial materials including outgoing and incoming invoices and sales records; printed materials promoting the gallery and its artists; press materials; and a number of photographs of Boris Mirski at events and with others, as well as photographs of artwork. Artists particularly well represented in the collection include David Aronson, Leonard Baskin, Hyman Bloom, Esther Geller, Rico Lebrun, Michael Mazur, Arthur Polonsky, Ben Shahn, Mitchell Siporin, Barbara Swan, and Karl Zerbe.

The records of the Boston, Massachusetts Swetzoff Gallery measure 18.6 linear feet and date from 1941 to 1968. Materials include administrative files, scattered general correspondence, named files, exhibition files, financial records, printed material, a scrapbook of printed material, photographs, and the personal papers of Hyman Swetzoff.