Columbia subject headings:
France--Relations--Germany--Hesse-Kassel--Congresses.
Hesse-Kassel--Relations--France--Congresses.
Thirty Years' War, 1618-1648--Diplomatic history--Congresses.
Harvard subject headings:
France--Relations--Germany--Hesse-Kassel (Electorate)--Congresses.
Hesse (Germany)--Relations--France--Congresses.
Thirty Years' War, 1618-1648--Diplomatic history--Congresses.
Princeton subject headings:
France--Relations--Germany--Hesse-Kassel (Electorate)--Congresses.
Hesse (Germany)--Relations--France--Congresses.
Thirty Years' War, 1618-1648--Diplomatic history--Congresses.