License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Kitao Masanobu (Santō Kyōden) 北尾政演 (山東京伝). Yoshiwara Courtesans: A New Mirror Comparing the Calligraphy of Beauties (Yoshiwara keisei: Shin bijin awase jihitsu kagami)吉原傾城」新美人合自筆鏡, 1784, first month. The Metropolitan Museum of Art.