License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Je viens prévenir le roi Agamemnon qu'on va commencer le 4e acte..., from Croquis Dramatiques, published in Le Charivari, November 27, 1856, November 27, 1856. The Metropolitan Museum of Art.