License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
James Gillray. Blowing-up the Pic-Nic's;–or–Harlequin Quixote Attacking the Puppets, vide Tottenham Street Pantomime, April 2, 1802. The Metropolitan Museum of Art.