Columbia subject headings:
Elizabeth I, Queen of England, 1533-1603.
Mary, Queen of Scots, 1542-1587.
Harvard subject headings:
Elizabeth I, Queen of England, 1533-1603.
Great Britain--Kings and rulers--Biography.
Mary, Queen of Scots, 1542-1587
Princeton subject headings:
Elizabeth I, Queen of England, 1533-1603.
Great Britain--History--Elizabeth, 1558-1603.
Great Britain--Kings and rulers--Biography.
Mary, Queen of Scots, 1542-1587.
Scotland--History--Mary Stuart, 1542-1567.
Scotland--Kings and rulers--Biography.