Columbia subject headings:
Harvard subject headings:
Bars (Drinking establishments)--Germany--Hamburg--History--Sources.
Germany--Politics and government--1888-1918--Sources.
Germany--Social conditions--1871-1918--Sources.
Hamburg (Germany)--Politics and government--Sources.
Hamburg (Germany)--Social conditions--Sources.
Police reports--Germany--Hamburg.
Working class--Germany--Hamburg--History--19th century--Sources.
Working class--Germany--Hamburg--History--20th century--Sources.
Working class--Germany--History--19th century--Sources.
Working class--Germany--History--20th century--Sources.
Princeton subject headings:
Hamburg (Germany)--History--Sources.
Hamburg (Germany)--Social conditions.
Hamburg (Germany)--Social life and customs--Sources.