Columbia subject headings:
Harvard subject headings:
Forty-seven Rōnin
Japan--History--Akō Vendetta, 1703--Sources.
Japan--History--Akō Vendetta, 1703.
Princeton subject headings:
Forty-seven Rōnin.
Japan--History--Akō Vendetta, 1703--Sources.
Japan--History--Akō Vendetta, 1703.