Parkinson, Cyril Northcote, 1909-1993 Gunpowder, treason and plot / C. Northcote Parkinson. - New York : St.Martin's Press, [1977]. - 139 p. : facsims., plans, ports ; 24 cm. Includes index ISBN: 312353502 Subjects--Topical Terms: Gunpowder Plot, 1605