License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. La Course de Chevaux sur la Place Pitti a Florence (The Horse Race on the Piazza Pitti in Florence), from "Les Caprices" Series A, The Florence Set, 1617. The Metropolitan Museum of Art.