Columbia subject headings:
Frederick William I, King of Prussia, 1688-1740--Congresses.
Prussia (Germany)--History--Frederick William I, 1713-1740--Congresses.
Prussia (Germany)--Kings and rulers--Biography--Congresses.
Harvard subject headings:
Frederick William I, King of Prussia, 1688-1740--Congresses.
Prussia (Germany)--History--Frederick William I, 1713-1740--Congresses.
Prussia (Germany)--Kings and rulers--Biography--Congresses.
Princeton subject headings:
Frederick William I, King of Prussia, 1688-1740--Congresses.
Prussia (Germany)--History--Frederick William I, 1713-1740--Congresses.
Prussia (Germany)--Kings and rulers--Biography--Congresses.