Columbia subject headings:
Harvard subject headings:
Poland--History--Sigismund III, 1587-1632
Poland--Kings and rulers--Biography
Sigismund III, King of Poland and Sweden, 1566-1632.
Sweden--Kings and rulers--Biography
Princeton subject headings:
Poland--Kings and rulers--Biography.
Sigismund III, King of Poland and Sweden, 1566-1632.
Sweden--Kings and rulers--Biography.