License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. There's no denying it's me!..., from 'The public at the exhibition,' published in Le Petit Journal pour Rire, June 18, 1864, June 18, 1864. The Metropolitan Museum of Art.