License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Yōshū (Hashimoto) Chikanobu. Illustration of the Inquisition of Ōyama Tsunayoshi (Ōyama Tsunayoshi kyūmon no zu), August, 1877. The Metropolitan Museum of Art.