Columbia subject headings:
Harvard subject headings:
Europe--History--476-1492.
France--Foreign relations--Holy Roman Empire.
Great Britain--Foreign relations--Holy Roman Empire.
Holy Roman Empire--Foreign relations--France.
Holy Roman Empire--Foreign relations--Great Britain.
Sigismund, Holy Roman Emperor, 1368-1437.
Princeton subject headings:
England--Foreign relations--Holy Roman Empire.
Europe--History--476-1492.
France--Foreign relations--Holy Roman Empire.
Holy Roman Empire--Foreign relations--England.
Holy Roman Empire--Foreign relations--France.
Sigismund, Holy Roman Emperor, 1368-1437.