Columbia subject headings:
Harvard subject headings:
Mogami River (Japan)
Roads--Japan--Yamagata-ken.
Ushūhama Kaidō (Yamagata-ken, Japan)--Description and travel.
Yamagata-ken (Japan)--History.
Princeton subject headings:
Roads--Japan--Yamagata-ken--History.
Yamagata-ken (Japan)--History.