License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. They Refused This...the Ignoramuses!! (Ils m'ont refusé ça...les ignares!!), published in Le Charivari, April 6, 1859. From the series: L'Exposition de 1859., April 6, 1859. The Metropolitan Museum of Art.