License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Grande révolte des rats de montfaucon, from Les Hippophages, published in Le Charivari, October 21, 1856, October 21, 1856. The Metropolitan Museum of Art.