License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Antonio Tempesta. Mercury Turning Aglauros to Stone (Aglauros a Mercurio in lapidem transformatur), plate 20 from "The Metamorphoses of Ovid" (Metamorphosean Sive Transformationum), Published after 1606. The Metropolitan Museum of Art.