License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Going to the swimming pool just for the development of one's muscles, from 'Summer sketches,' published in Le Charivari, August 10, 1865, August 10, 1865. The Metropolitan Museum of Art.