Tony Urquhart, Summer Forms I, 1961, Oil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36643

Tony Urquhart, Forest Floor, II, 1961, Oil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36640

Denis Bourdon, Cabinet card of Frederick Douglass with his grandson Joseph Douglass, May 10, 1894, albumen and silver on photographic paper on card mount; H x W: 6 1/2 × 4 1/4 in. (16.5 × 10.8 cm), National Museum of African American History and Culture, Washington, D.C. https://dartabase.art/cite/smithsonian/ld1-1725446217400-1725446230804-1

Paul-Émile Borduas, La Guignolée, 1954, Watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/32988

Betty Goodwin, Figure/Ladder Series, IV, 1996, Oilstick, pastel, graphite,and charcoal on plastic sheet, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38465