Du Bois, Guy Pène. "But Aren't You Interested in Making More Christians?", 1930. Pen and ink and graphite pencil on paper, Sheet (Irregular): 15 3/4 × 11 1/4in. (40 × 28.6 cm). Whitney Museum of American Art, New York; purchase, 31.524. Courtesy of James Graham & Sons and the Estate of Guy Pene du Bois (Photo: Whitney Museum of American Art)