
Museum of Contemporary Art Tokyo, Art Library, Digital Archive of Rare and Important Materials (Japanese only)
https://trc-adeac.trc.co.jp/Html/Usr/1351035100/index.html
The Museum of Contemporary Art Tokyo’s Art Library has digitized and made available sketchbooks, diaries, and other handwritten
materials from the artist Masamu Yanase (1900-1945), letters from art figures and handwritten diaries and manuscripts from the
former collection of Susumu Watanabe (1900-1961), and sketchbooks from the former collection of the printmaker Kanenori Suwa
(1897-1932).