License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Les Théâtres au Mois d'Août, from Croquis d'Été, published in Le Charivari, August 21, 1856, August 21, 1856. The Metropolitan Museum of Art.