The papers of New York art dealer, critic, and author Martin Birnbaum measure 3.2 linear feet and date from 1862-1967, with the bulk of the material dating from 1920-1967. The papers document Birnbaum's association with the firm of Scott & Fowles, the lives and activities of his friends and colleagues, and his literary work, through biographical material, correspondence, writings and notes, business records, printed material, a scrapbook, scattered artwork, and photographs of Birnbaum, friends and colleagues, and artwork.

The papers of sculptor, painter, and educator Sidney Simon measure 8.0 linear feet and 2.21 GB and date from circa 1917-2002, with the bulk of the papers dating from 1940-1997. The collection documents Simon's career through biographical material, correspondence, writings and notes, subject files, sketches, sketchbooks, printed and digital material, and photographs.

The papers of collectors Raymond and Margaret Horowitz measure 5.4 linear feet and date from 1903-2007, with the bulk of the material dating from 1960- 2007. The collection documents the Horowitzes' activities as collectors through art collection files, including appraisals, sales information, printed material, and photographs of artwork; files of artwork sold or donated; accession records, including inventory lists of paintings and prints; and catalog information.

The Morgan Russell papers, 1891-1977, present a good overview of Russell's career as a painter and sculptor, with an emphasis on his development of the color theory movement, Synchromism. The papers include correspondence, biographical material, transcripts of lectures given by Russell, illustrated notebooks and sketches, printed material and photographs.

The scattered papers of art critic and writer Charles Henry Caffin measure 1.2 linear feet and date from circa 1883-1973, bulk circa 1883-1918. Found within the papers are an interview transcript, two letters, printed materials, one scrapbook, and family photographs dating from circa 1883 to circa 1911, many by noted photographers Arnold Genthe, Frances Benjamin Johnston, Gertrude Käsebier, Edward Steichen, and Alfred Stieglitz. The scrapbook contains Caffin's columns for the New York American, 1913-1915.

The records of the Architectural League of New York measure 114.9 linear feet and date from 1880s-1974 (bulk 1927-1968). The League's mission "to advance the art of architecture" is documented through administrative and business records, committee records and officers' files, exhibition files, records of functions and events, correspondence, publicity files, photographs, lantern slides, and 16 scrapbooks.

The papers of New York art dealers and gallery owners Otto and Ilse Gerson measure 3 linear feet and date from 1933 to 1980. This collection includes biographical materials, correspondence, exhibition files, artists' files, collectors' files, business records, inventory and stock records, printed materials, and photographs.

The papers of painter María Luisa Pacheco measure 0.5 linear feet and date from 1951 to circa 1979. The collection is comprised of exhibition announcements and catalogs; greeting cards including one card designed by Pacheco; newsletters; photographs and transparencies of Pacheco, an exhibition catalog, and works of art; and Pacheco's student card from La Escuela Central de Bellas Artes de San Fernando de Madrid.

The papers of Chaim and Dorothy Koppelman measure 4.0 linear feet and date from circa 1930s-2006, bulk 1942-2005. The collection documents the activities of Chaim Koppelman and his wife, Dorothy Koppelman, as artists and educators, and their affiliation with the Terrain Gallery and the Aesthetic Realism Foundation. Materials include biographical material, correspondence, writings and notes, subject files, teaching files, exhibition files, personal business records, scrapbooks, printed material, sketches, sketchbooks, and photographs.

The papers of painter, photographer and sculptor Lowell Nesbitt measure 50.2 linear feet and 0.001 GB and date from circa 1903-1993 (bulk 1950-1993). The collection documents Nesbitt's career through biographical material, correspondence, subject files, business and financial records, source material, artwork, photographs and audiovisual records, printed material and scrapbooks.