Columbia subject headings:
Harvard subject headings:
Brandenburg (Germany : State)--History--Congresses.
Brandenburg (Germany : State)--Politics and government--Congresses.
Frederick I, Elector of Brandenburg, 1371-1440--Congresses.
Hohenzollern, House of--History--Congresses.
Princeton subject headings:
Brandenburg (Germany : State)--History.
Brandenburg (Germany : State)--Politics and government.
Frederick I, Elector of Brandenburg, 1371-1440.
Hohenzollern, House of--History.