Columbia subject headings:
Harvard subject headings:
Frederick III, Holy Roman Emperor, 1415-1493.
Holy Roman Empire--History--Frederick III, 1440-1493.
Holy Roman Empire--Relations--Switzerland.
Switzerland--History--1032-1499.
Switzerland--Relations--Holy Roman Empire.
Zurich (Switzerland)--History, Military.
Princeton subject headings:
Frederick III, Holy Roman Emperor, 1415-1493.
Holy Roman Empire--History--Frederick III, 1440-1493.
Zurich (Switzerland)--History, Military.