License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. L'Homme au Gros Dos Orné d'Une Rangée de Boutons (Man with a Large Back Ornamented with a Row of Buttons), from "Varie Figure Gobbi, suite appelée aussi Les Bossus, Les Pygmées, Les Nains Grotesques" (Various Hunchbacked Figures, The Hunchbacks, The Pygmes, The Grotesque Dwarfs), 1616–22. The Metropolitan Museum of Art.