The papers of New York art dealer, writer and teacher, Martin Diamond measure 3.2 linear feet and date from 1928 to 2013. The materials involve to a limited degree Diamond's wife, Harriette Diamond, co-owner and co-operator of Martin Diamond Fine Arts, Inc. Their gallery work and relationships with artists they represented are documented by writings, subject and artist files, and photographic materials. Subject files concern American abstract art, particularly the 20th century Transcendental abstract painters, and include printed materials, correspondence and photographic materials. Artists' files include similar materials and some writings by artists. Photographic materials are of artworks and exhibition installations.

This collection documents the career of Lester Beall, graphic designer and commercial artist from approximately 1933-1967.

The East Village Area X Gallery records measure 2.4 linear feet and date from 1977-1988. The collection consists primarily of artists files for fifteen artists represented by or of interest to the gallery. The files are varied but may include biographical information, correspondence, financial and inventory records, printed materials, and photographs. Gallery records include scattered financial records, publicity files, and printed materials.

The Victor D. Spark papers measure 22.2 linear feet and date from circa 1830 to 1983, with the bulk of the material from 1930 to 1970. The papers document Spark's career as a New York City art dealer and appraiser who was most active from World War II through the 1970s, focusing on Old Masters paintings and 19th and early 20th century American art. Found within the papers are biographical materials, artist files, client files, financial records, legal records, printed material, and photographs.

The papers of New York City and Paris art historian, educator, and gallerist Colette Roberts measure 10.2 linear feet and date from 1918 to 1971. Papers include correspondence, writings, teaching records, project proposals, gallery records from Grand Central Moderns Gallery, clippings, Roberts' printed articles, press releases, exhibition catalogs, posters, photographs, and a few works of art on paper. Also found are 124 interviews with contemporary artists conducted by Roberts.

Primarily exhibition catalogs for modernist art exhibitions held in New York City during the first two decades of the twentieth century. Also included are catalogs for Boston exhibitions, mainly pre-1900, and a few other locales; exhibition announcements; gallery publications; and other printed material.

The papers of art historian and museum educator Ruth Bowman are dated 1936-2006, bulk 1963-1999, and measure 26.7 linear feet. Professional correspondence and subject files document Bowman's relationships with colleagues and reflect her interests, activities including curatorial work, and accomplishments as a museum educator. Writings and related research materials include her thesis,"Thomas Pollock Anshutz, 1851-1912" (M.A., Institute of Fine Arts, New York University, 1971), and unfinished projects. Also found are interviews conducted by Bowman with a wide range of individuals for a variety of purposes.

The papers of American New York School painter Ludwig Sander measure 2.8 linear feet and date from 1910 to 1975. Found are biographical materials primarily consisting of army records; correspondence with family and colleagues discussing exhibitions and other art-related activities; diaries; personal scattered business records; address books and art history typescripts; sketchbooks and illustrations for magazines; photographs of Sander, his colleagues, his travels, and exhibition openings; and miscellaneous printed material. The collection documents Sander's career and interactions with some of the most important modern artists of twentieth century.

The records of Ex Libris measure 2.0 linear feet and date from 1973-2007. Ex Libris was a New York City based antiquarian establishment that dealt in rare 20th century avant-garde books and periodicals, and was founded by Elaine Lustig Cohen and her husband Arthur A. Cohen. The records include professional files, sales records, printed material, and photographic material.

The papers of New York painter, writer, and educator Elias Newman measure 1.1 linear feet and date from 1922 to 1981. Newman's participation in exhibitions and various art related organizations, notably Artists Equity Association, is documented through biographical material, correspondence, notes, writings, organizational records, printed material, and photographs.