Columbia subject headings:
Sigismund, Holy Roman Emperor, 1368-1437.
Switzerland--History--1032-1499.
Switzerland--Politics and government.
Harvard subject headings:
Sigismund, Holy Roman Emperor, 1368-1437
Switzerland--History--1032-1499.
Switzerland--Politics and government.
Princeton subject headings:
Constitutional history--Holy Roman Empire.
Sigismund, Holy Roman Emperor, 1368-1437.
Switzerland--Politics and government--1032-1499.