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| Gerry StPierre | Jul 3 2009, 01:54 AM |
Just registered
  ![]](http://209.85.122.85/static/1/pip_r.png)
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Interesting article about an old cipher sent to Thomas Jefferson by one of his correspondents. It has been solved by a math professor at UPenn. |
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| Old Cipher Broken · Chaocipher | |
9:28 PM Nov 25
