Columbia subject headings:
Castile (Spain)--History--Henry IV, 1454-1474.
Henry IV, King of Castile and Leon, 1425-1474.
Harvard subject headings:
Castile (Spain)--History--Henry IV, 1454-1474.
Henry IV, King of Castile and Leon, 1425-1474.
Princeton subject headings:
Castile (Spain)--History--Henry IV, 1454-1474.
Henry IV, King of Castile and Leon, 1425-1474.