License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Goya (Francisco de Goya y Lucientes). A charlatan extracting a tooth from a patient's mouth, figure in the foreground vomiting; folio 68 (verso) from the Madrid Album "B", 1796–98. The Metropolitan Museum of Art.