Study for Nighthawks, 1941 or 1942. Fabricated chalk and charcoal on paper; 11 1/8 × 15 in. (28.3 × 38.1 cm). Whitney Museum of American Art, New York; purchase and gift of Josephine N. Hopper by exchange 2011.65. © Heirs of Josephine N. Hopper, licensed by the Whitney Museum of American Art. Digital image © Whitney Museum of American Art