Columbia subject headings:
Harvard subject headings:
Brandenburg (Germany : State)--History--18th century--Congresses.
Frederick II, King of Prussia, 1712-1786--Congresses.
Prussia (Germany)--History--Frederick II, 1740-1786--Congresses.
Princeton subject headings:
Brandenburg (Germany : State)--Politics and government--18th century--Congresses.
Frederick II, King of Prussia, 1712-1786--Congresses.
Prussia (Germany)--Kings and rulers--Biography--Congresses.
Prussia (Germany)--Politics and government--1740-1786--Congresses.