License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Tiens..., qu' est-ce qu' c'est donc qu' ça?..., from Naïvetés, published in Le Charivari, April 15, 1859, April 15, 1859. The Metropolitan Museum of Art.