Columbia subject headings:
Holy Roman Empire--History--1273-1517--Congresses.
Harvard subject headings:
Holy Roman Empire--History--1273-1517--Congresses.
Princeton subject headings:
Frederick III, Holy Roman Emperor, 1415-1493.
Germany--History--Frederick III, 1440-1493.
Germany--History--Maximilian I, 1493-1519.
Germany--Kings and rulers.
Germany--Politics and government--1273-1517.
Maximilian I, Holy Roman Emperor, 1459-1519.