License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. My poor Mars! I did all that I could!, from 'News of the day,' published in Le Charivari, May 29, 1867, May 29, 1867. The Metropolitan Museum of Art.