Spied In Plain Sight
by Bruce Buckfelder
Industrial espionage on behalf of the President of the United States of America. but this isn't a movie. It's the true story of Lawrence Bell, president of Bell Aircraft, and his 1938 journey through Germany, Italy, France, and England. The president asked Bell to evaluate the aircraft industries of friend and (probable) foe and report back.
History buffs will want to read Spied In Plain Sight.