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.

Correspondence, family, business, and personal (1927-1967); artwork, including photographs and reproductions of Martinelli's United Nations commission; statements on his work; and printed material, including clippings about Martinelli (1928-1968), and exhibition announcements, catalogs, and invitations (1934-1968). Correspondents include Aldo John Casanova, Ed Colker, Martin Craig, Dorothy Dehner, Helmut von Erffa, Giannetto Fieschi, Horace Gregory, Peter Grippe, Edmund Haines, Stanley Hayter, Louis I. Kahn, Leon Kelly, Leon Kroll, Norman Lewis, Sam Maitin, Barbara Brooks Morgan, Marnie Pomeroy, Melville Price, Walter Reinsel, Theodore Roszak, Charles Seide, Helena Simkhovitch, David Smith, and Carl Zigrosser.

Papers of the Italian-American painter, engraver, illustrator, printmaker who worked in New York City and Chicago. Correspondence (1932-1967); exhibition catalogs and invitations (1930s-1977); original artwork (prints and etchings); reproductions of artwork; and printed materials, including articles and newspaper clippings (1933-1968) about Calapai. Predominantly incoming correspondence includes that of the American Institute of Graphic Arts, John Taylor Arms, Artists for Victory, Inc., Aline Bernstein, Boston Public Library, Brooklyn Museum, Charles Burchfield, Lorenz B. Graham, Lou Harrison, Arthur Heintzelman, Codman Hislop, Clayton Hoagland, Charles Hopkinson, A. Hyatt Mayor, Riverside Museum, Max Rudolf, Franz Schoenberner, Society of American Graphic Artists, Benton Spruance, Andrew Stasik, Lynd Ward, Morris Weisenthal, Mabel Wheaton, John Hall Wheelock, Arthur Zaidenberg, and Carl Zigrosser. Exhibition catalogs includes catalogs for two Rockwell Kent exhibits at Calapai's gallery.

Papers of the American still-life and portrait painter; specialized in the female figure. Collection includes correspondence concerning art exhibitions (1945-1953); artwork reproductions, statements on art, and memorabilia, including articles and clippings about Bassford (1953-1968) as well as his exhibition catalogs (1939-1962).