Columbia subject headings:
Harvard subject headings:
Internal security--Japan--History--Sources.
Sekisho--Japan--Hakone-machi--History--Sources.
Tōkaidō (Japan)--History--Sources.
Princeton subject headings:
Internal security--Japan--History--Sources.
Sekisho--Japan--Hakone-machi--History--Sources.
Tōkaidō (Japan)--History--Sources.