Columbia subject headings:
Communism--Germany--Offenbach am Main--History--20th century--Sources.
Hesse (Germany)--Politics and government--Sources.
National socialism--Germany--Offenbach am Main--History--Sources.
Offenbach am Main (Germany)--Politics and government--Sources.
Harvard subject headings:
Communism--Germany--Offenbach am Main--History--20th century--Sources.
Hesse (Germany)--Politics and government--Sources.
National socialism--Germany--Offenbach am Main--History--Sources.
Offenbach am Main (Germany)--Politics and government--Sources.
Princeton subject headings:
Hesse (Germany)--Politics and government--Sources.
Offenbach (Germany)--Politics and government--Sources.
Political parties--Germany--History--Sources.