Columbia subject headings:
Great Britain--Foreign relations--France--Sources.
Great Britain--Foreign relations--Spain--Sources.
Great Britain--History--Lancaster and York, 1399-1485--Sources.
Great Britain--History--Tudors, 1485-1603--Sources.
Harvard subject headings:
Great Britain--History--Lancaster and York, 1399-1485--Sources.
Great Britain--History--Tudors, 1485-1603--Sources.
Princeton subject headings: