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 Madeleine-Bastille Bus Line, A trifle, a nothing... and the bus is full, published in Souvenirs d'Artistes, March 16, 1862. The Metropolitan Museum of Art.