The papers of art conservator and historian, engineer, and professor Daniel Varney Thompson (1902-1980) are dated 1848-1979, with the bulk of the material dated 1923-1979. The collection measures 10.1 linear feet and consists of biographical material, correspondence, subject files, writings, artwork, printed material, and photographs.

The papers of Washington, D.C. painter and art educator Alma Thomas, date from circa 1894-2001 and measure 5.5 linear feet. The papers document Thomas's work as a teacher, and her development and success as a painter of the Washington Color School, through biographical material, letters, notes and writings, personal business records, exhibition files, printed materials, scrapbooks, photographs, an audio recording, and two video recordings.

The papers of painter and naturalist, Abbott Handerson Thayer, and the Thayer family date from 1851 to 1999, with the bulk of the material dating from 1881 to 1950, and measure 5.12 linear feet. Thayer's painting career, interest in concealing coloration (camouflage) in nature, and relationships with artists, patrons, family, and friends are documented through correspondence, writings, scattered legal and financial records, printed materials, and a scrapbook. Photographs are of Thayer, his family, studio, and friends, including artists. The collection also contains family papers created by his second wife, Emma Beach Thayer, his son Gerald, his daughters Mary and Gladys, and Gladys' husband David Reasoner, who managed Thayer's estate after his death.

The papers of Boston portraitist and painter Polly Thayer (Starr) (1904-2006) measure 21.6 linear feet and 0.807 GB and date from 1846 to 2008, with the bulk of the materials dating from 1921-2008. The papers document Thayer's personal life and career as a painter, portraitist, and pastel artist. Found within the papers are biographical materials, extensive family papers, correspondence with artists and art venues, interviews, writings, subject files, organization files, exhibition files, art inventory records, printed and digital materials, five sketchbooks, artwork, and photographs.

The records of New York art gallery Terry Dintenfass, Inc. date from 1947 to 1987, with the bulk of the collection dating from 1961 to 1983, and measure 22.1 linear feet. The records are comprised of administrative files, correspondence, exhibition files, artists' files, and financial records.

The records of the Terrain Gallery measure 5.3 linear feet and date from circa 1950s-2005, bulk 1955-1985. The bulk of the records consists of exhibition files that document over one hundred and forty exhibitions as well as the gallery's relationship with artists. The collection includes founding documents, correspondence, artists' files, writings and an interview, financial records, scrapbooks, and photographs.

The collection measures 20.4 linear feet, dates from 1885 to 1991 (bulk dates 1908-1986) and documents the career of Harlem Renaissance lithographer, teacher, and painter Prentiss Taylor. The collection consists primarily of subject/correspondence files (circa 16 ft.), reflecting Prentiss' career as a lithographer and painter, his association with figures prominent in the Harlem Renaissance, notably Carl Van Vechten and Langston Hughes, his activities as president of the Society of Washington Printmakers and other art organizations, his work in art therapy treating mental illness, and his teaching position at American University. The subject files contain mostly correspondence, but many include photographs and printed material. Also included are biographical, financial, legal and printed material; several hundred photographs; notes and writings; sketchbooks, drawings and a few prints by Taylor; and scrapbooks dating from 1885-1956.

The records of contemporary New York City Tanager Gallery measure 2.6 linear feet and date from 1952 to 1979. Found are administrative files, financial and legal records including detailed receipt books, scattered correspondence, artists' files for circa 70 artists that include price lists and biographies, two scrapbooks of printed materials, newsclippings, exhibition announcements and other printed materials, and five photographs of openings at the gallery and of the exterior of the building.

The papers of the expatriate African American painter Henry Ossawa Tanner measure 2.3 linear feet and date from the 1860s to 1978, with the bulk of the material dating from 1890 to 1937. Found in the papers are scattered biographical, family, and legal materials; twenty-seven folders of correspondence with family, friends, patrons, and galleries; writings and notes by Tanner and others; a small amount of printed material; numerous photographs of Tanner, his studio in Paris and home in Trepied, Normandy, his family, friends, fellow artists, and his artwork. Additional photographs include a circa 1890 shot of Tanner with fellow students at the Académie Julian and another depicting Tanner with members of the American Art Club in Paris, circa 1900. Also found are a few sketches and drawings.

The papers of landscape painter and educator Reuben Tam measure 9.2 linear feet and date from 1931 to 2006. The papers document his career as a painter in New York, Maine, and Hawaii through biographical material; correspondence with family, friends, art organizations, schools, and galleries; diaries, poetry, and other writings; exhibition catalogs, news clippings, other printed material; photographs; artwork, including seventeen sketchbooks; and eight scrapbooks. There is a 1.1 linear foot unprocessed addition to the collection donated in 2020 that includes 34 sketchbooks, circa 1940-1974, by Tam from his time in New York, Hawaii, Connecticut, Massachusetts, Oregon, Alaska and Canada.