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 10: a soldier charging a cannon in center, other soldiers with picks standing at left and 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.