License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Katsushika Hokusai. The Amida Falls in the Far Reaches of the Kisokaidō Road (Kisoji no oku Amida-ga-taki), from the series A Tour of Waterfalls in Various Provinces (Shokoku taki meguri), ca. 1827. The Metropolitan Museum of Art.