License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. Mon ami..., lâche lui ta canne.... from Aux Bains de Mer, published in Le Charivari, September 28, 1859, September 28, 1859. The Metropolitan Museum of Art.