License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Artists Examining the Work of a Rival (Artistes en train d'examiner le tableau d'un rival), from Le Public du Salon, published in "Le Charivari", May 14, 1852. The Metropolitan Museum of Art.