Columbia subject headings:
Harvard subject headings:
Communism--Germany--Hamburg--History--Sources.
Communists--Germany--Hamburg--Biography--Sources.
Germany--Politics and government--1918-1933--Sources.
Hamburg (Germany)--Politics and government--Sources.
Kommunistische Partei Deutschlands--History--Sources.
Thälmann, Ernst, 1886-1944
Princeton subject headings:
Communism--Germany--Hamburg--History--Sources.
Communists--Germany--Hamburg--Biography--Sources.
Germany--Politics and government--1918-1933--Sources.
Hamburg (Germany)--Politics and government--Sources.
Kommunistische Partei Deutschlands--History--Sources.
Thälmann, Ernst, 1886-1944.