License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
James Gillray. Alecto and Her Train, at the Gate of Pandaemonium:–or–The Recruiting Sarjeant Enlisting John Bull, Into the Revolution Service, July 4, 1791. The Metropolitan Museum of Art.