The Boy Spy
A Substantially True Record of Events During the War of the RebellionBook - 1889
Kerbey's book The Boy Spy describes an often overlooked aspect of espionage: the transmission of coded messages. He details the "history of war telegraphers in the field" and provides "a full account of the mysteries of signalling by flags, torches, and rockets."
Publisher: Chicago : Belford, Clarke & Company, 1889.
Characteristics: 1 online resource (587 p.)