August 22, 1910: The Japan-Korea Annexation Treaty was signed. It took effect one week later.
This map was found in a drawer in the Map Collection not long ago, and was recently cataloged during a cooperative cataloging project with several other institutions. Map cataloging is a highly specialized area; to get the map cataloged locally, it would have taken a cooperative effort between 3 different employees.
Map: Kankoku keijō zenzu / Keifu Tetsudō Kabushiki Gaisha cho. Tōkyō : Keifu Tetsudō Kabushiki Gaisha, Meiji 36