License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Tsukioka Yoshitoshi. The Spirit of Akugenta Yoshihira Strikes Nanba Jirō during Kiyomori’s Visit to Nunobiki Waterfall, 1868. The Metropolitan Museum of Art.