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. An entrance to a fortress in center, a woman with child seated by a fire to right, soldiers gather to right and in center, cannons in landscape to left, title page from "Peace and War" (Divers desseins tant pour la paix que pour la guerre), ca. 1641. The Metropolitan Museum of Art.