License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Kitagawa Utamaro 喜多川歌麿. Gifts from the Ebb-Tide (The Shell Book) (Shiohi no tsuto) 潮干のつと, 1789. The Metropolitan Museum of Art.