The papers of Kenyon and Louise Cox measure 0.3 linear feet and date from 1876 to 1977. Included are Kenyon and Louise's Certificate of Marriage, autobiographical notes by Louise focusing on her time at the National Academy of Design, writings, and correspondence, primarily from Kenyon Cox, including several illustrated letters. Also found is artwork by Kenyon and others, including Julian Alden Weir, biographical material on Jacob Dolson Cox, Keyon's Father, photographs and printed reproductions of artwork, magazine and newspaper clippings, an unpublished bibliography on Kenyon Cox, and a handwritten list of Kenyon Cox paintings in the National Academy of Design permanent collection.

The papers of New York, N.Y., and Washington, D.C. painter and muralist Allyn Cox measure 11 linear feet and date from 1856-1982. The collection documents Cox's personal and professional life through biographical material, family and general correspondence, writings and notes, research material, printed material, sketchbooks and loose sketches, and photographs. Photographs are of Cox at work, the Cox family, including Kenyon and Louise Cox, Cox's friends and colleagues, events, and Cox's artwork.

This small collection of items of New York painter Frederick Stuart Church, measures 0.1 linear feet and dates from circa 1895-1905. It includes letters, some illustrated, from Church to various people, a sketch, and a photograph of one of Church's paintings.

The Charles Henry Hart autograph collection dates from 1731-1917 and measures 1.7 linear feet comprised of 226 letters, portrait prints, and other documents signed by American artists.

The Richard Murray research material regarding mural painting in the United States measures 20.5 linear feet and dates from 1896 to 2006 with the bulk of the material dating from 1970 to 2006. The collection is comprised of Murray's extensive research files, scattered writings, and photographic materials for his life-long research on mural painting in the United States.

The papers of art historican August Jaccaci measure 7.2 linear feet and date from 1889 to 1935, with the bulk of the material dating from 1904 to 1914. The collection documents Jaccaci's work as an art historian, writer, and editor, primarily during the period he researched, compiled, and published his book Noteworthy Paintings in Private American Collections. More than one-half of the collection consists of extensive correspondence to and from many notable artists, collectors, and art historians, including John La Farge, Kenyon Cox, Isabella Stewart Gardner, and Bernard Sickert concerning the research and publication of the book. The papers also house legal files, writings and notes, art collection research files, and photographs of artwork.

The papers of wood engraver Timothy Cole date from 1883-1936, and measure 0.5 linear feet. Found within the papers are letters primarily written by Timothy Cole to the editors of Century Magazine, and letters to Cole from colleagues Gifford Beal, Alice Brown, George de Forest Brush, Kenyon Cox, David Finney, Helen C. Frick, Joseph Pennell, Caroline Powell, John Singer Sargent, and Helen M. Turner. Also found are miscellaneous writings, artwork including wood engravings and printing plates, miscellaneous clippings and a photograph of Cole and his wife.

The Thomas Prichard Rossiter and Rossiter Family papers measure 0.5 linear feet and date from 1840 to 1961. Included are letters to painter Thomas Prichard Rossiter and letters to his son, architect Ehrick Kensett Rossiter, documenting their friendships with many artists and Thomas Prichard Rossiter's sketchbook and loose sketches. Edith Rossiter Bevan's papers include her writings on her grandfather, Thomas Prichard Rossiter; a scrapbook; photographs of the Rossiter family; notes by Bevan; news clippings; and other printed material. Also found is Bevan's collection of artists' letters.

The papers of Boston painter, teacher, critic, and writer Philip Leslie Hale measure 7.4 linear feet and date from 1818 to 1962, with the bulk of the material dating from 1877 to 1939. Biographical information; correspondence with family, friends, and colleagues, including many artists; sketches and 9 sketchbooks; writings; printed material; and photographs document the artist's career and personal life. The collection also includes research materials and catalogs compiled by Albert J. Kennedy for a never-published Philip Leslie Hale memorial volume.

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.