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 papers of art collectors, art patrons, and philanthropists Lawrence and Barbara Fleischman measure 4.9 linear feet and date from 1837 to 1984, with the bulk of the materials dating from 1935-1979. The papers are comprised mostly of correspondence with artists, museums, and arts organizations. Also found are scattered biographical materials, artists' autograph letters purchased by the Fleischmans, exhibition files, notes and writings, printed material, and photographs.

The papers of painter, printmaker, and curator Jacob Kainen measure 33.3 linear feet and date from 1905 to 2009, with the bulk of the material from 1940-2001. The bulk of the collection consists of correspondence/subject files including personal correspondence to and from friends and family members and professional correspondence and records concerning Kainen's activities as an artist, curator, teacher, and art collector. The collection also contains biographical material, writings, diaries, calendars, inventories, interview transcripts, printed material, photographs, works of art by other artists, and nine scrapbooks.

The papers of Holger Cahill (1887-1960) date from 1910 to 1993, with the bulk of the material dating from 1910-1960, and measure 15.8 linear feet. The collection offers researchers fairly comprehensive documentation of Cahill's directorship of the Works Progress/Projects Administration's (WPA) Federal Art Project (FAP) in addition to series documenting his work as a writer and art critic. Material includes correspondence, reports, artist files, scrapbooks, printed material, and photographs.

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 Henri Gallery, a Washington, D.C. gallery that showed painters from the Washington Color School and emerging artists, measure 55.4 linear feet and date from circa early 1900s, 1940 to 1996, with the bulk of the materials dating from 1957 to 1995. The gallery's relationship with artists and clients, exhibitions, sales, and other business is documented in alphabetical files containing a wide variety of materials, including correspondence, sales records, printed materials, photographs, slides, and motion picture film. Additional correspondence, newspaper clippings, 114 exhibition posters, scattered drawings, illustrated cards, and photographic materials are also found in the collection.

The C. J. (Clarence Joseph) Bulliet papers measure 34.6 linear feet and are dated circa 1888-1959. Biographical materials, correspondence, writings, subject and artist files, printed material, photographs, and artwork document the career of the influential Chicago art critic and writer. The records contain extensive information about art and artists in Chicago and the Midwest from the early to mid-twentieth century.

The records of the Carnegie Institute, Museum of Art measure 265.8 linear feet and date from 1883-1962, with the bulk of the material dating from 1885-1940. The collection includes extensive correspondence between the museum's founding director, John Beatty, and his successor, Homer Saint-Gaudens, with artists, dealers, galleries, collectors, museum directors, representatives abroad, shipping and insurance agents, and museum trustees. The collection also includes Department of Fine Arts interoffice memoranda and reports; loan exhibition files; Carnegie International planning, jury, shipping, and sale records; Department of Fine Arts letterpress copy books, and a copy of the original card catalog index to these records.

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 papers of caricaturist and illustrator Alfred J. Frueh measure 4.4 linear feet and date from 1904-2010. These papers consist of biographical information, including a sound recording of reminiscences about Frueh by his children; correspondence that includes many illustrated letters and greeting cards; notes and writings; numerous caricature sketches, cartoons, and 25 sketchbooks by Frueh; printed material; and photographs of Frueh and his artwork.