I just finished Burn After Reading: The Espionage History of World War II by Ladislas Farago.  I’d hoped it would reveal something useful for Kryptos but it has not.

I would, however, recommend it to anyone interested in WWII, spies, or cryptology.  The sheer amount of detail is staggering down to the individual names of spies that only lasted a couple days.  It’s not comprehensive enough to hurt the brain but it does a very good job of covering the whole of World War II in the context of the intelligence communities and activities of the nations involved.

Kryptos Fan