Columbia subject headings:
Great Britain--History--Lancaster and York, 1399-1485.
Great Britain--History--To 1485.
Harvard subject headings:
Great Britain--History--Lancaster and York, 1399-1485
Great Britain--History--Lancaster and York, 1399-1485--Sources.
Great Britain--History--Plantagenets, 1154-1399--Sources.
Great Britain--History--Plantagenets, 1154-1399.
Princeton subject headings:
Great Britain--History--Lancaster and York, 1399-1485.
Great Britain--History--Plantagenets, 1154-1399.