License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Anonymous, Italian, 17th century. Plate 6: Allegory with Hercules chasing off the Harpies as Justice and Plenty aid the poor, from "Barberinae aulae fornix", ca. 1677. The Metropolitan Museum of Art.