Title: Operation Sea Lion
Author: Peter Fleming
Fleming, Peter (1957). Operation Sea Lion: The Projected Invasion of England In 1940, An Account of The German Preparations And The British Countermeasures. New York, Simon and Schuster
- London ed. (Hart-Davis) has title: Invasion 1940.
Date Posted: January 8, 2016
Reviewed by Paul W. Blackstock and Frank L. Schaf
A thorough and objective study, based on German as well as British sources, of the German plans to invade England and the British plans to repel the projected invasion. Of particular interest are chapters 11 and 12, which describe the battle between the intelligence staffs on both sides of the channel.
 Blackstock, Paul W. (1978) and Frank L. Schaf, Jr. Intelligence, Espionage, Counterespionage, And Covert Operations: A Guide to Information Sources. Detroit: Gale Research Co., p. 62