Иллюстрации и детали см.: Melton H. K. OSS Special Weapons & Equipment: Spy Devices of WWII. – New York: Sterling, 1991, p. 95.
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Lovell S. P. Of Spies & Stratagems, p. 42. Изображения и описание см.: Melton H. K. OSS Special Weapons & Equipment, p. 85; McLean D. B. The Plumber's Kitchen: The Secret Story of American Spy Weapons. – Wickenburg, Arizona: Normount Technical Publications, 1975, p. 167–171.
