The papers of sculptor Katherine Hobson Thayer measure 0.6 linear feet and date from 1930 to 1982. Found within the collection are personal and professional correspondence; writings on art and anticommunist activities; printed materials; sketches; and photographs and slides of Hobson, her friends, and her artwork.

The John Gellatly letters received from artists measure 0.2 linear feet and date from 1887 to 1931. Found within the collection are 120 letters to Gellatly from Emma and Abbott H. Thayer, Frederick S. Church, Irving Wiles, Albert Pinkham Ryder, C. E. S. Wood, and George Grey Barnard. Some of the letters contain sketches, particularly those from Church. Topics include the price and progress of artworks, requests for commissions, mutual friendships, and daily events. There are also two copies of the poem "The Flying Dutchman" by Albert P. Ryder.

The papers of painter Mark Baum date from 1926 through 1997 and measure 1.5 linear feet. Found within the collection are biographical and personal files; family and professional correspondence; exhibition announcements and catalogs; lecture notes and cassette tape recordings of lectures; writings, newspaper clippings, photographs and slides, loose sketches, sketchpads, sketchbooks, and stencils.

The papers of New York artist Zarina Hashmi date from 1950-2015. The extent measures 1.1 linear feet and 4.28 gigabytes. This small collection documents Hashmi's life and career through biographical material; correspondence with friends, dealers, and curators; writings, including diary pages, a digital video recording of a lecture, and notebooks; project files containing sketches, studies, and reference material; printed material; and over 100 photographs from various stages in the artist's life.

The papers of exhibition curator Sanford Schwartz measure 0.7 linear feet and date from 1948-2011. The papers document the preparation and organization of two exhibitions curated by Schwartz, the Myron Stout retrospective at the Whitney Museum of American Art in 1980, and The Early Work of William King at Alexandre Gallery in New York City in 2007. Materials regarding Provincetown, Massachusetts painter Myron Stout (1908-1987) include correspondence with Stout and lenders to the exhibition; notes, writings, and sketches by Schwartz pertaining to the exhibition; and photographs of Stout, including one with Hans Hofmann teaching in Provincetown in 1948. Material regarding sculptor William King (1925-1990) includes correspondence between Schwartz and King, exhibition research and notes, photographs of artwork, and printed material.

Biographical material, correspondence, legal and financial material, notes and writings, art work, scrapbooks, sketchbooks, printed material, subject files and photographs.

Papers document independent inventor John G. Vasquez. The papers include drawings, sketches, correspondence, notebooks, photographs, and prototypes for two of Vasquez's inventions.

This small collection of scattered papers of painter and illustrator Charles E. Waltensperger measures 1.2 linear feet and dates from 1893-1931. Papers include biographical material, scattered correspondence between family members, sales records, engagement diaries, notes, sketches of the human form, printed material, and photographs of Waltensperger, his family, colleagues, and travel scenes.

The papers of technical artist, fabricator, and conservator Jack Brogan measure 4.25 linear feet and date from 1968 to 2016 with the bulk of the collection dating from 1971 to 2009. The collection documents Brogan's collaboration with many artists associated with Southern California Light and Space art to help realize their ideas. Papers include biographical material, project files, printed material, photographic material, and artwork. There is a 2.0 linear foot unprocessed addition to this collection donated in 2020 that includes files related to projects with Robert Irwin, Tony DeLap, Robert Therrien, Philip Aziz, Peter Alexander, Roy Lichtenstein, Lita Albuquerque and others. Some files relate to repairs to work by Lynda Benglis, Larry Bell, John McCracken, Hal Metzer. Several files relate to projects Brogan worked on for churches and synagogues, including First Baptiste Church, Pomona, California. Many contain multiple original drawings, sketches, and notes by artists. Material dates from 1973-2014.

The papers of New Hampshire landscape painter William Preston Phelps and his daughter, artist Ina Phelps Hayward, measure 1.1 linear feet and date from 1849-2001, with the bulk of the material dating from the 1890s to the 1920s. Papers include letters from Phelps, and correspondence regarding Ina Phelps Hayward's involvement in her father's 1917 estate sale; sales and legal records related to the Phelps estate; a scrapbook and printed material about William Preston Phelps; a sketchbook of sketches attributed to Phelps; sketches by Ina Phelps Hayward and her husband Roger Hayward; photographs of Phelps, his home and studio in Chesham, New Hampshire, and his artwork; and glass plate negatives, including two of Phelps and thirty-six of his artwork.