License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Proposal for a new system to better isolate reactionnaries, from 'News of the day,' published in Le Charivari, January 14, 1870, January 14, 1870. The Metropolitan Museum of Art.