License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Giulio Carpioni. Air, represented by Iris reclining on her rainbow, accompanied by a winged putto bearing a torch and another winged putto riding an eagle, from "The Elements", 1640–60. The Metropolitan Museum of Art.