License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Sassoferrato (Giovanni Battista Salvi). Studies of Two Flying Putti and of Drapery (recto); Seated Virgin and Child, and Kneeling Child (verso), 1609–85. The Metropolitan Museum of Art.