Yūkan
Yūkan（1934）Japanese Noh Plays: How to See them, Board of Tourist Industry, Tokyo [EN]
- 29Many of the masks produced during the Edo period are imitations of those of the previous periods, and with the exception of those by some talented mask-makers—for instance, Kawati, Yamato, Zekan, Yūkan, Tōhaku, Tōsui, Yūsui, Gensuke—are of inferior workmanship.