The papers of graphic artist, muralist, and activist Hugo Gellert measure 6.9 linear feet and date from 1916 to 1986. They document his career as an artist and organizer for the radical political left through an interview, legal papers, financial records, family papers, artifacts, correspondence, writings, organizational records, extensive printed materials (many of them illustrated by Gellert), photographs, and artwork.

The papers of New York City and Gainesville, Florida based painter Arnold Mesches (1923-2016) measure 13.6 linear feet and date from 1939-2015. The collection documents Mesches' politically-engaged career and work process through biographical material, correspondence, writings, gallery and exhibition files, project files, subject files, teaching files, personal business records, printed material, and photographic material. Project files comprise a bulk of the collection and include grant files, activism files, project notebooks, and over 100 art project files containing drawings, source material, and photographic material for individual artworks.

The papers of Henry Varnum Poor measure 12.9 linear feet and date from 1873-2001, with the bulk from the period 1904-1970. Correspondence, writings, artwork, printed material and photographs document Poor's work as a painter, muralist, ceramic artist and potter, architect, designer, writer, war artist, educator and a co-founder of the Skowhegan School of Painting and Sculpture. Also found is extensive information about the design and construction of Crow House, his home in New City, New York, commissions for other architectural projects, and his personal life.

The Paul Ryan papers measure 19.7 linear feet and document Ryan's education and career as a pioneering video artist, theorist, writer, and educator. Records include school records, family papers, correspondence, writings, project files, video recordings, teaching files, printed materials, scattered photographs, and artwork by others. Organizational records are also found for the Earthscore Foundation, Earth Environmental Group, the Gaia Institute, and the Raindance Corporation, among others. The bulk of Ryan's professional work is documented in his writings and project files.

The papers of writer, art critic and collector Bernard Harper Friedman, 1926-2011, bulk 1943-2010, measure 30.6 linear feet. Extensive professional and personal correspondence, 41 diaries, a large number of his published and unpublished writings, and subject files document Friedman's career as a writer, relationships with cultural institutions and art world figures, and his personal life. Also included are biographical materials, interviews, printed material, 5 scrapbooks and photographs.

The records of the Downtown Gallery date from 1824 to 1974 (bulk 1926-1969) and measure 109.56 linear feet. The records present a comprehensive portrait of a significant commercial gallery that operated as a successful business for more than forty years, representing major contemporary American artists and engendering appreciation for early American folk art. There is an unprocessed addition to this collection dating circa 1970 of a single financial/legal document.

Papers and photographs documenting the lives and descendants of Samuel and Mamie Anderson Bridgewater of Helena, Montana.

The papers of Louise Nevelson measure 30.5 linear feet and date from circa 1903 to 1988. The collection documents aspects of the life and work of the sculptor, focusing especially on her later career. Papers include correspondence, personal business records, writings, scrapbooks, early art work, photographs, interviews, awards and honorary degrees, books, and an extensive amount of printed material.

Collection documents the personal life and professional career of American theatre and film actor Jean Stapleton.

The Matthew Williams Stirling and Marion Stirling Pugh papers, 1876-2004 (bulk 1921-1975), document the professional and personal lives of Matthew Stirling, Smithsonian archaeologist and Chief of the Bureau of American Ethnology (1928-1957), and his wife and constant collaborator, Marion Stirling Pugh. The bulk of the material is professional in nature and includes material from Matthew's early career in the 1920s, the careers of Matthew and Marion together from when they married in 1933 to Matthew's death in 1975, and Marion's life and work from 1975 until her death in 2001. The majority of the documentation relates to the investigation of the Olmec culture in Mexico by the Stirlings, including the discoveries of eight colossal Olmec heads. In addition, the collection documents their work in Panama, Ecuador, and Costa Rica, looking for connections between Mesoamerica and South America. Materials include field notes, journals, correspondence, photographs, writings, clippings, ephemera, articles, and scrapbooks.