Columbia subject headings:
Military religious orders.
Orders of knighthood and chivalry, Papal.
Orders of knighthood and chivalry.
Harvard subject headings:
Military religious orders.
Orders of knighthood and chivalry
Orders of knighthood and chivalry, Papal.
Princeton subject headings:
Military religious orders--History.
Orders of knighthood and chivalry, Papal--History.
Orders of knighthood and chivalry--History.
Papal decorations--History.