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 Correspondence (1923-1973); manuscript writings, including various chapters of an unpublished autobiography; photographs and reproductions of Lozowick's work; and printed material, including articles by Lozowick and exhibition catalogs.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.