License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. The 56, or the trappists of politics: –Tough to have a session in front of your own grave!, from 'News of the day,' published in Le Charivari, April 8, 1870, April 8, 1870. The Metropolitan Museum of Art.