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The enigma girls : how ten teenagers broke ciphers, kept secrets, and helped win World War II
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Unbreakable : the spies who cracked the Nazis' secret code
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Geniuses at war : Bletchley Park, Colossus, and the dawn of the digital age
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The Navajo code talkers
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Code girls the untold story of the American women code breakers of World War II
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Code girls the untold story of the American women code breakers of World War II
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Code girls : the untold story of the American women code breakers of World War II
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Navajo code talkers
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Code girls : the true story of the American women who secretly broke codes in World War II
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Navajo code talkers
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The secret war : spies, ciphers, and guerrillas 1939-1945
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Who were the Navajo code talkers?
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Between silk and cyanide : a codemaker's war, 1941-1945
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The Ultra secret
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Sioux code talkers of World War II
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The Shadow war
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The Red hotel : Moscow 1941, the Metropol Hotel, and the untold story of Stalin's propaganda war
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The secret war with Germany : deception, espionage, and dirty tricks, 1939-1945
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Code name : Lise : the true story of World War II's most highly decorated spy
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The spymasters : the true story of Anglo-American intelligence operations within Nazi Germany, 1939-1945
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Double cross : [the true story of the D-day spies]
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Double cross : the true story of the D-day spies
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Hope is the last to die; a personal documentation of Nazi terror
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Operation Mincemeat : how a dead man and a bizarre plan fooled the Nazis and assured an allied victory
