License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Félix Teynard. Assouan, Ruines de l'Ancienne Enciente Arabe, au Sud-Est de la Ville, 1851–52, printed 1853–54. The Metropolitan Museum of Art.