Digital images of a map and a drawing owned by the Kyoto University Museum have been released in Kyoto University Rare Materials Digital Archive.

Tsubokiri no goken zu is a drawing of a sword for protection that had been handed down from generations of Emperors to their crown princes at the installation ceremonies.
Ezo ga shima chizu is an antique map of Hokkaido created by Hata Awagimaro (秦檍丸; 1760-1808) who dedicated himself to the investigation of the island.

As of June 17, 2020, the Digital Archive provides 1,365,123 images of 17,640 titles.

Tsubokiri no goken zu
Tsubokiri no goken zu
Ezo ga shima chizu
Ezo ga shima chizu