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.

The Bertha Schaefer papers and gallery records measure 4.6 linear feet and date from 1909-1975, with the bulk of the material dating from 1940-1965. The collection documents the Bertha Schaefer Gallery as well as Bertha Schaefer, the interior designer, through correspondence with artists and galleries, artist files, client files, exhibition material, printed material, financial material, biographical material, photographs, and six scrapbooks.

The papers of sculptor and environmental artist Aleksandra Kasuba measure 12.4 linear feet and date from circa 1900-2019, with the bulk of the material from 1960-2010. The collection documents Kasuba's career through biographical material, correspondence, interviews, lectures and writings, extensive project files, printed material, a scrapbook, artwork, and photographs.

An interview of Edward Landon conducted 1975 Apr. 17-May 28, by Robert Brown, for the Archives of American Art.

The papers of painter, illustrator, and screenprinter Allen Saalburg, 1924-circa 2003, bulk 1940-1987, measure 0.8 linear feet. Included are professional correspondence, printed material, a scrapbook and photographs. Most photographs are of Saalburg and his artwork. Also found are biographical material and subject files.

The papers of New York artist Lillian Kiesler and architect and sculptor Frederick Kiesler measure 49.1 linear feet and 0.001 GB and date from circa 1910s-2003, with the bulk of the material from 1958-2000. The collection documents their personal and professional lives and the legacy of Frederick Kiesler's work through biographical material, correspondence, legal, financial and business records, teaching files, exhibition and performance files, artwork, subject files, printed and digital material, writings and interviews, monographs, photographic material, and sound and video recordings. Also found are papers related to Abstract Expressionist painter Hans Hofmann and the papers of artist Alice Hodges.

The bulk of the collection consists of renderings of sewing machines and related products by industrial designers such as Henry Dreyfuss, Robert P. Gersin, Eliot Noyes, and Malcolm S. Park; by designers of Singer's in-house design department; and by consultants to the firm. Materials include decals, photographs, negatives, patents, and renderings and sketches. This collection documents the influence of industrial design on Singer sewing machines as well as other household products such as vacuum cleaners.

The papers of American sculptor Stephen Antonakos measure 24.2 linear feet and 1.73 GB and date from 1932-2014, with the bulk of the material dating from 1960-2014. The collection documents Antonakos's pioneering work in neon, through biographical material, correspondence, writings and notes, project files, exhibition files, printed and digital material, and photographs.

The records of the Fendrick Gallery measure 106.4 linear feet and 0.008 GB and span the years 1952 to 2001. The bulk of the collection is comprised of artist's files that document the gallery's relations with and representation of over 300 contemporary artists and sculptors, including Robert Arneson, William Bailey, Daniel Brush, Wendell Castle, Robert Cottingham, James Drake, John Dreyfuss, Walter Dusenbury, Roger Essley, Helen Frankenthaler , Sam Gilliam, Jasper Johns, Raymond Kaskey, Claude and Francois Lalanne, Albert Paley, Joseph Raffael, Carol Summer, and numerous other artists. Also found are subject, exhibition, commission, administrative, and financial files, as well as files documenting the gallery's relationship with other museums and galleries.

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.