The Coulton Waugh and Waugh Family papers measure 27 linear feet and date from 1751-1974 with the bulk of material dating from 1838 to 1974. The collection contains material from this family of artists living and working in Provincetown, Cape Cod, New York City, and England, including Coulton Waugh, Frederick Judd Waugh, Samuel Bell Waugh, and scattered material from Elizabeth Waugh, Ida Waugh, and Odin Waugh. Biographical materials, correspondence, diaries, writings, book project files, teaching files, business records, printed material, scrapbooks, photographs, and artwork are found.

The papers of art critic, editor, and gallery director Sidney Woodward date from 1823 to 1963, bulk 1915-1932, and measure 3.5 linear feet. The majority of the collection consists of personal and professional correspondence and collected letters that pertain to Woodward's relationships with various artists, galleries, and arts organizations. Also included in this collection are two biographical documents; lecture notes and collected writings; printed material including books relating to the topic of art, exhibition catalogs, and newspaper clippings; a few personal photographs and reference photographs of paintings; and scrapbooks containing newspaper clippings, art reproductions, and printed material from the Casson Galleries.

The records of Milch Gallery measure 42.5 linear feet and date from 1911-1995. Edward Milch (1865-1953) opened the Edward Milch Gallery in New York City. In 1916, he formed a partnership with his brother Albert Milch (1881-1951), a gilder and framer, creating E. & A. Milch, Inc., a gallery specializing in American art. Harold C. Milch (1904-1981), Albert's son, was appointed a partner in 1944 and continued the business until his death. Business records of Milch Gallery, 1911-1968, include correspondence, sales records, inventories, financial records, printed matter, photographs, and legal documents. Later additions to the records date from 1922-1995 and include correspondence; artists' files; financial, sales, and stock records; printed material; and photographs.

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 art historian E. P. Richardson measure 28.7 linear feet and date from 1814-1996, with the bulk of the materials dating from 1921-1996. Within the papers are scattered biographical materials; acquisition files for Richardson's personal art collection; professional and personal correspondence with colleagues, art historians and critics, artists, museums, galleries, and dealers; numerous writings, including manuscripts and research files for his published books, articles, and lectures; general research notebooks and files compiled by Richardson on a wide variety of art-related topics and artists; professional and committee files; as well as a smaller amount of Constance C. Richardson's papers.

The Library of Congress Copyright Deposit Collection is comprised of 2,335 photomechanical reproductions of works by 741 artists (mostly American). The large-format prints, deposited with the Library of Congress for copyright between 1890 and 1945, represent a broad range of nineteenth- and twentieth-century American art.

The Victor D. Spark papers measure 22.2 linear feet and date from circa 1830 to 1983, with the bulk of the material from 1930 to 1970. The papers document Spark's career as a New York City art dealer and appraiser who was most active from World War II through the 1970s, focusing on Old Masters paintings and 19th and early 20th century American art. Found within the papers are biographical materials, artist files, client files, financial records, legal records, printed material, and photographs.

The records of the American Academy in Rome measure 65.9 linear feet and date from 1855 to 2012. The collection documents the history of the institution from its inception in 1894 as the American School of Architecture in Rome, through the end of World War II, and chronicles the contributions the academy has made to America's cultural and intellectual development. Nearly one-half of the collection consists of an unprocessed addition received in 2014 containing records that mostly post-date World War II and include correspondence and subject files of officers and executives based in the New York office of American Academy in Rome.

The Macbeth Gallery records provide almost complete coverage of the gallery's operations from its inception in 1892 to its closing in 1953. Through extensive correspondence files, financial and inventory records, printed material, scrapbooks, reference and research material, and photographs of artists and works of art, the records document all aspects of the gallery's activities, charting William Macbeth's initial intention to lease his store "for the permanent exhibition and sale of American pictures" through over sixty years of success as a major New York firm devoted to American art. The collection measures 131.6 linear feet and dates from 1838 to 1968 with the bulk of the material dating from 1892 to 1953.

The records of Vose Galleries of Boston measure 25.6 linear feet and date from circa 1876, 1890s-1996 with the bulk of materials dating from 1920s-1930s. Nearly 90 percent of the collection documents the gallery's handling of American paintings and portraits through incoming and outgoing business correspondence with artists, clients, galleries, and museums, including considerable correspondence with portrait artist Alfred Jonniaux and clients regarding commissioned portraits. Other materials include client files; artists' biographies; records of sales, consignments, framing, restoration, and banking, mostly from the 1940s-1960s; and scattered exhibition catalogs, newspaper clippings, and postcards. Also found is a handwritten manuscript regarding the 1876 Centennial Exhibition in Philadelphia, PA and a 1991 videotape about the Vose Galleries and its founding family.