Columbia subject headings:
Harvard subject headings:
Heinrich, Prince of Prussia, 1726-1802.
Prussia (Germany)--Court and courtiers--Biography.
Prussia (Germany)--History--Frederick II, 1740-1786.
Princeton subject headings:
Heinrich, Prince of Prussia, 1726-1802.
Prussia (Germany)--Court and courtiers--Biography.
Prussia (Germany)--History--Friedrich II, 1740-1786.