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 American painter, collagist; died 1983. Collection includes correspondence (1933-1978); artwork reproductions and photographs; writings, including a reminiscence of Gertrude Stein; and memorabilia, including inventories of artwork, itineraries, photographs, financial material, exhibition announcements, invitations, and catalogs (1931-1987), and articles and reviews about Martin. Correspondence covers family, business, and personal correspondence, including that with Adelyn Breeskin, Tom L. Freudenheim, Henry Gorski, Lincoln F. Johnson, Ralph T. Millet, Wasyl Palijczuk, Charles Parkhurst, Brenda Richardson, Eleanor Patterson Spencer, Bertha Fanning Taylor, and Alice B. Toklas.

Papers of the American Jewish lithographer, painter, and art critic, born in Russia, emigrated to the United States in 1906. Correspondence (1923-1973); manuscript writings, including various chapters of an unpublished autobiography; photographs and reproductions of Lozowick's work; and printed material, including articles by Lozowick and exhibition catalogs.

Papers of the American painter, illustrator, cartoonist, lithographer. Correspondence (1927-1950); original drawings, paintings, and prose by Gropper and others; published material, including cartoons from New Masses, clippings, exhibition lists, and illustrations (1918-1968); and a scrapbook containing birthday congratulations.