Columbia subject headings:
Great Britain--History--Lancaster and York, 1399-1485.
Great Britain--History--Tudors, 1485-1603.
Harvard subject headings:
Great Britain--History--Lancaster and York, 1399-1485
Great Britain--History--Tudors, 1485-1603.
Princeton subject headings:
Great Britain--History--Lancaster and York, 1399-1485.
Great Britain--History--Tudors, 1485-1603.