Columbia subject headings:
England--Civilization--1066-1485--Congresses.
Great Britain--History--Henry VII, 1485-1509--Congresses.
Great Britain--History--Lancaster and York, 1399-1485--Congresses.
Harvard subject headings:
England--Civilization--1066-1485.--Congresses.
Great Britain--History--Henry VII, 1485-1509--Congresses.
Great Britain--History--Lancaster and York, 1399-1485--Congresses.
Princeton subject headings:
England--Civilization--1066-1485--Congresses.
Great Britain--History--Henry VII, 1485-1509--Congresses.
Great Britain--History--Lancaster and York, 1399-1485--Congresses.