Group items tagged

We'll talk about Kryptos as some point. Elonka Dunin is perhaps the world's expert on this unsolved mystery.

Many interesting ones in this list. I like the Kryptos at the CIA headquarters. 

Here's a list of 10 unsolved cipher texts throughout history, #2 is the Beale Papers covered in the chapter, #8 is Kryptos (the background of our website). Some date back as far as 1400 BC and some are more recent like the Zodiac Killer.