Mathematician Reveals Historical Mystery

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An 1801 letter written to then-president Thomas Jefferson has drawn recent attention. The letter, written by University of Pennsylvania professor Robert Patterson, "was devoid of capital letters or spaces and scrambled in a way that left no readable segments," according to a Physorg article. A mathematician helped break the 200-year-old code in 2007, helping us understand more about the secret message sent to the president.

 

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