License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. Plate 12: a procession of troops enter a city, horseman in center playing a trumpet towards the left, horsemen at left galloping towards the right, from "Troops, cannons, and attacks on towns" (Dessins de quelques conduites de troupes, canons, et ataques de villes), ca. 1640. The Metropolitan Museum of Art.