License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Eugène Delacroix. The Giaour on Horseback (recto); Study of a Woman with Head and Arms Thrown Back, and Study of the Head of an Old Man (verso), 1824–26. The Metropolitan Museum of Art.