From The Observation Deck: Let's continue with

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Sunday, August 14, 2011

Let's continue with

STILL MORE AMAZING ORIGINS I know you love these, so let’s keep ‘em going... The concept of writing in code has been around for hundreds of years. The science of cryptography actually dates from the 16th century. Then invisible ink came on the scene, and the science and execution of secret messages... Sign in to see full entry.

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