License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Goya (Francisco de Goya y Lucientes). Plate 51 from "The Disasters of War" (Los Desastres de la Guerra): 'Thanks to the millet' (Gracias á la almorta), 1811–12 (published 1863). The Metropolitan Museum of Art.