Columbia subject headings:
Harvard subject headings:
Hesse-Darmstadt (Grand duchy)--Foreign relations--18th century.
Hesse-Darmstadt (Grand duchy)--History--18th century.
Ludwig VIII, Landgrave of Hesse-Darmstadt, 1691-1768.
Maria Theresa, Empress of Austria, 1717-1780.
Princeton subject headings:
Hesse-Darmstadt (Grand duchy)--Foreign relations--18th century.
Hesse-Darmstadt (Grand duchy)--History--18th century.
Ludwig VIII, Landgrave of Hesse-Darmstadt, 1691-1768.
Maria Theresa, Empress of Austria, 1717-1780.