The research material of Connecticut artists and authors Nelson and Henry C. White, measures 4.5 linear feet and dates from circa 1851-1961. The bulk of the collection consists of Nelson C. White's correspondence, writings, and research, primarily related to J. Frank Currier and Abbott Handerson Thayer, and referencing Thomas Wilmer Dewing. Also found are the correspondence, writings, and research files of Nelson's father, Henry C. White, primarily relating to Dwight W. Tryon. Research files include artist correspondence, writings and notes, printed material, photographs of the artists, and photographs of artwork and exhibition installations.

The papers of painter and teacher Frank Duveneck and his wife and painter Elizabeth Boott Duveneck measure 1.2 linear feet and date from 1851-1972, bulk 1851-1919. Aspects of the lives and work of the artists are documented in correspondence, creative writings, research notes, scrapbooks, newspaper clippings, magazine articles, ephemera, sketches and sketchbooks, and vintage photographs.

The papers of the painter, muralist, and illustrator John White Alexander measure 11.9 linear feet and date from 1775 to 1968, with the bulk of materials dating from 1870 to 1915. Papers document Alexander's artistic career and many connections to figures in the art world through biographical documentation, correspondence (some illustrated), writings, 14 sketchbooks, additonal artwork and loose sketches, scrapbooks, photographs, awards and medals, artifacts, and other records. Also found is a souvenir engraving of a Mark Twain self-portrait.

Papers document Landy R. Hales (1889-1972), an inventor and commercial artist who designed window and interior store displays, posters, children's games, and puzzles primarily from 1920s to 1930s in New York City and Baltimore. Of significance is Hales's work for Macy's Department Store. The papers consist of correspondence, patents, business records for several of Hales's companies, photographs, drawings/sketches, prototypes, and newspaper and magazine clippings.

This record unit documents the activities of the Office of the Registrar staff and consists of temporary loan files; temporary exhibition files, including shipping, insurance information, and loan agreements; general correspondence files; administrative files; and the files of the Smithsonian Art Commission, 1963-1975.

This collection includes glass plate negatives, copy negatives and photographic prints taken and collected by Joseph Imhof, a lithographer and painter known for documenting Pueblo culture in New Mexico. These include images shot by Imhof in Acoma, Isleta, Santa Clara (K'apovi) and Taos Pueblos; glass plate negatives (copies) of Frank Rinehart portraits; original glass plate negatives made by Orlando Scott Goff among the Apsáalooke (Crow/Absaroke) in Montana circa 1894; photographic prints of Imhof artworks; and photographs of Joseph and Sarah Imhof and their home in Taos, New Mexico.

The records of the Catherine Viviano Gallery measure 11.6 linear feet and date from 1930-1990, with the bulk of the materials dating from 1949-1978. Established in New York City in 1949, the gallery specialized in contemporary painting and sculpture primarily by American and European artists. The collection consists of artists' files; correspondence with artists, collectors, dealers, museum directors, curators, and publishers; business records; printed material; and photographs of artwork and artists. Also included are records relating to Catherine Viviano's activities as a private dealer and consultant after she closed the gallery in 1970.

The Frank K. M. Rehn Galleries records measure 21.8 linear feet and are dated 1858-1969 (bulk 1919-1968). The records consist mainly of business correspondence with collectors, artists, museums and arts organizations, colleagues, and others. A small amount of Frank K. M. Rehns personal correspondence and a few stray personal papers of individual artists are interfiled. Also included are financial records, scrapbooks, printed matter, miscellaneous records, and photographs documenting most of the history of a highly regarded New York City art gallery devoted to American painting.

The papers of arts administrator, museum director, collector, dealer, and editor Charles M. Kurtz (1855-1909), measure 27.74 linear feet and date from 1843-1990 (bulk dates 1884-1909). The bulk of the collection consists of detailed chronological correspondence between Kurtz and his wife and family, friends, colleagues, and business associates that documents many notable exhibitions, galleries, museums, private collections, as well as cities, people, and events of the period. Also found in the collection are Kurtz's diaries, scrapbooks, printed materials, and photographs.

The records of New York City Kraushaar Galleries measure 106.3 linear feet and 0.181 GB and date from 1877 to 2006. Three-fourths of the collection documents the gallery's handling of contemporary American paintings, drawings, and sculpture through correspondence with artists, private collectors, museums, galleries, and other art institutions, interspersed with scattered exhibition catalogs and other materials. Also included are John F. Kraushaar's estate records; artists' files; financial ledgers documenting sales and gallery transactions; consignment and loan records; photographs of artwork; sketchbooks and drawings by James Penney, Louis Bouché, and others; and two scrapbooks. There is a 6.0 linear foot unprocessed addition to this collection donated in 2022 that includes correspondence with artists, galleries, organizations and individuals regarding works of art, filed alphabetically by year. Materials date from circa 1959-1999, with the bulk from 1990-1999.