Correspondence (1937-1965); personal papers (1950-1952); photographs of Harriton and his work (1918-1962); manuscripts by Harriton on art and artists (1949-1964); scrapbooks (1915-1962); published material (1922-1964); and biographical material.

Correspondence, 1904-1946; photographs, juvenilia, and printed material. Correspondence includes that of Anna Hyatt Huntington, Audella Hyatt, Leon Kroll, Alfred G. Mayor, and Harriet Randolph Hyatt Mayor.

Correspondence (1943-1964); and exhibition catalogs, clippings, and articles about Chaim Gross (1937-1964). Incoming correspondence includes that of Sidney Alexander, Associated American Artists, George Biddle, Theodore Bikel, Isabel Bishop, Butler Institute of American Art, Rhys Caparn, Federico Castellón, Philip Evergood, Robert Gwathmey, Benjamin Kopman, Leon Kroll, Yasuo Kuniyoshi, Hedy Lamarr, Millard Lampell, Los Angeles County Museum of Art, Irving Marantz, Herman Maril, Museum of Modern Art, National Institute of Arts and Letters, New School for Social Research, Jan Peerce, Raphael Soyer, Sabina Teichman, Carl Van Vechten, Harold Weston, Whitney Museum of American Art, and William Zorach.

Papers of the American painter, art critic. Correspondence, 1910-1969; holograph and typescript essays, lectures, and speeches; photographs; and printed material, including articles, exhibition catalogs, and material relating to the National Academy of Design, of which Clark wrote a history.

Papers of the American sculptor, lithographer, etcher (1892-1968?). Primarily correspondence (1928-1965); also clippings and photographs of Wickey and his work.