Columbia subject headings:
Harvard subject headings:
Heiminsha.
Kinoshita, Naoe, 1869-1937
Kōtoku, Shūsui, 1871-1911
Ōsugi, Sakae, 1885-1923
Sakai, Toshihiko, 1870-1933
Socialists--Japan--Biography
Princeton subject headings:
Heiminsha--History.
Socialists--Japan--Biography.