Columbia subject headings:
Harvard subject headings:
Authors, American--20th century--Biography
London, Jack, 1876-1916--Political and social views.
Radicalism in literature.
Radicals--United States--Biography.
Socialism in literature.
Socialists--United States--Biography
Princeton subject headings:
Authors, American--20th century--Biography.
London, Jack, 1876-1916--Political and social views.
Radicalism in literature.
Radicals--United States--Biography.
Socialism in literature.
Socialists--United States--Biography.