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. A triple waterfall, a dead tree at right, a mountain and a herd of cows in the background at right, plate 7 from "Roman landscapes and ruins" (Paysages et ruines de Rome), ca. 1646. The Metropolitan Museum of Art.