License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Monsieur le Baron..., j'ai l'honneur..., from Croquis Été, published in Le Charivari, July 2, 1858, July 2, 1858. The Metropolitan Museum of Art.