Englands defence, a treatise concerning invasion, or, A brief discourse of what orders were best for repulsing of foreign forces if at any time they should invade us by sea in Kent, or elsewhere : exhibited in writing to the Right Honourable Robert Dudley, Earl of Leicester, a little before the Spanish Invasion, in the year 1588 / - Digges, Thomas, (Printed for F. Haley ...,, 1680)