License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. Le Paysan Frappant son Ane (The Peasant Striking his Donkey), plate 25 from "Lux Claustri ou La Lumière du Cloitre" (The Light of the Cloisters), 1621–35. The Metropolitan Museum of Art.