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Unsolved!: The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies

By Craig P. Bauer
eBook
$22.95
By Craig P. Bauer
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Watch Craig Bauer discuss the Zodiac Killer’s cipher on HISTORY’s new miniseries The Hunt for the Zodiac Killer

In 1953, a man was found dead from cyanide poisoning near the Philadelphia airport with a picture of a Nazi aircraft in his wallet. Taped to his abdomen was an enciphered message. In 1912, a book dealer named Wilfrid Voynich came into possession of an illuminated cipher manuscript once belonging to Emperor Rudolf II, who was obsessed with alchemy and the occult. Wartime codebreaker...

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Science & TechnologyComputersMathematicsComputers - General & MiscellaneousCryptographyComputer Security