ASONUMA, J. Topographical map of Hokkaido with localities of useful minerals. Hokkaidōchō (Gouvernement de Hokkaidō), Sapporo, 1891. 380 x 560 mm. Folding color lithographed map, mounted on linen. English–Japanese bilingual topographical map (1:1,500,000) of the island of Hokkaidō, detailing the distribution of mineral deposits and mining sites (“useful minerals”), issued by the Hokkaidō Government during the late-Meiji mining boom. It is associated with Jimbo Kotora’s general geological map of Hokkaidō (Hokkaidō Government edition).