License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. La Dernière Semaine avant L'Ouverture du Salon de Peinture, from Actualités, published in Le Charivari, May 9, 1857, May 9, 1857. The Metropolitan Museum of Art.