License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Hippolyte Flandrin. Study of an Apostle, for the painting of the Ascension in Saint-Germain-des-Pres, Paris (1839–1863), 1822–64. The Metropolitan Museum of Art.