Columbia subject headings:
Anarchists--Germany.
Anarchists--United States.
Most, Johann Joseph, 1846-1906.
Socialists--Germany.
Socialists--United States.
Harvard subject headings:
Anarchists--Germany.
Anarchists--United States.
Most, Johann Joseph, 1846-1906.
Socialists--Germany
Socialists--United States.
Princeton subject headings:
Anarchism--Germany.
Communism--Germany.