Columbia subject headings:
Great Britain--History--Henry VII, 1485-1509--Drama.
Impostors and imposture--Drama.
Warbeck, Perkin, 1474-1499--Drama.
Harvard subject headings:
Great Britain--History--Henry VII, 1485-1509--Drama.
Impostors and imposture--Drama.
Warbeck, Perkin, 1474-1499--Drama.
Princeton subject headings: