Museums in Japan and foreign countries which possess Nankoku’s works
Kasugai-shi Tofukinenkan
https://www.city.kasugai.lg.jp/shisetsu/bunka/tofu/index.html
The National Museum of Modern Art, Kyoto (MOMAK)
Saku-shi Tenrai Kinenkan ( Tenrai Memorial Museum of Saku-shi)
http://www.city.saku.nagano.jp/shisetsu/sakubun/tenraikinenkan/
Kröller-Müller Museum ( Otterlo , The Netherlands )
National Gallery of Victoria (NGV) (Melbourne , Australia)