Columbia subject headings:
Harvard subject headings:
Great Britain--History--Commonwealth and Protectorate, 1649-1660.
Great Britain--Politics and government--1649-1660.
Treason--Legal status, laws, etc.--England.
Princeton subject headings:
Great Britain--History--Commonwealth and Protectorate, 1649-1660.
Great Britain--Politics and government--1649-1660.
Treason--Legal status, laws, etc.--England.