国土地理院

UC Berkeley's Japanese historical map images. The database can be searched by county, province, author, keywords, & data fields.

Includes downloadable GIS data useful for understanding the transformation of the Kanto Plain (Tokyo, Yokohama, etc.) from a predominantly agricultural area to its present, densely-populated state. Japanese only.

日本歴史地理大系　Accessible via Japan Knowledge. Japanese-language dictionary of historical geography & maps. Search by keywords.

地学雑誌 (Tokyo Geographical Society)