License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
George Richmond. Compositional Study for "Comus–The Measure" (recto); Studies of a Man's Right Leg, after Titian, and a Profile, for "Comus–The Measure" (verso), before 1864. The Metropolitan Museum of Art.