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 mère de l'amour...., from Croquis Dramatiques, published in Le Charivari, January 20, 1857, January 20, 1857. The Metropolitan Museum of Art.