Columbia subject headings:
Europe--Court and courtiers--History--19th century.
Europe--Kings and rulers--Social life and customs.
Europe--Politics and government--19th century.
Political customs and rites--Europe.
Harvard subject headings:
Diplomatic etiquette--Europe.
Europe--Kings and rulers.
Visits of state--Europe
Princeton subject headings:
Diplomatic etiquette--Europe.
Europe--Kings and rulers.
Visits of state--Europe.