Columbia subject headings:
Hannover (Germany : Province)--History--Sources.
Hannover (Germany : Province)--History.
Prussia (Germany)--History--William I, 1861-1888.
Harvard subject headings:
Hannover (Germany : Province)--History
Hannover (Germany : Province)--History--Sources.
Prussia (Germany)--History--William I, 1861-1888.
Princeton subject headings:
Hannover (Germany : Province)--History--Sources.
Hannover (Germany : Province)--Politics and government.
Prussia (Germany)--History--William I, 1861-1888--Sources.
Prussia (Germany)--Politics and government--1815-1870.