Sketches in pencil, pen and ink with watercolor highlights. Identification in upper left corner (handwritten): Red-faced monkey. The monkeys are shown in various different poses, some sketched in full, others just details of a face, hand or foot.
Grouped sketches of primates, between 1895 and 1974. Benson Bond Moore papers, 1902-1995. Archives of American Art, Smithsonian Institution.
U.S. public domain
Archives of American Art, Smithsonian Institution Washington, D.C. 20560