License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. Les Troupes Forcent la Porte d'une Ville (The Troops Force Their Way Through the Gate of a City), from "La Vie de Ferdinand Ier de Médicis série appelée aussi Les Batailles des Médicis" (The Life of Ferdinand I de'Medici also called The Medici Battles), 1614–20. The Metropolitan Museum of Art.