Columbia subject headings:
Catholic Church--History.
Europe--History--476-1492.
Innocent III, Pope, 1160 or 1161-1216.
Rolfe, Frederick, 1860-1913--Friends and associates.
Harvard subject headings:
Catholic Church--History.
Europe--History--476-1492.
Innocent III, Pope, 1160 or 1161-1216
Princeton subject headings:
Catholic Church--History.
Europe--History--476-1492.
Innocent III, Pope, 1160 or 1161-1216.