Papers of the American sculptor, specializing in equestrian figures and animals. Correspondence, 1887-1965; diaries, 1925-1958; articles; exhibition catalogs; financial and legal material; manuscripts; and photographs.

Papers of the American sculptor and medalist. Died 1975.

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 (1892-1960); diaries, genealogical materials, notebooks, photographs, printed material, including articles and clippings, scrapbooks, memorabilia, and sketchbooks. Correspondence includes that of Adelaide Cole Chase, Clara Carter Hyatt Coad, Anna Hyatt and Archer M. Huntington, Audella Hyatt, and Alfred G. Mayor.