Chapter 21 is up, but this one was by far the hardest of anything so far. The hard drive and TQSiT nearly ended up in the river a few times over the last month. For better or worse, if I don't post, I'll give it up for good, so Chapter 21 is here.
A few sources,
The Riegner Report
Eavesdropping on Hell, Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945
But Their Trade is Treachery, the MI5 Pamphlet on Tricks of the Cold War
The Venona Project
The One Time Pad
MICE -- Money, Ideology, Coercion, Ego, the motives for spying
A few sources,
The Riegner Report
Eavesdropping on Hell, Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945
But Their Trade is Treachery, the MI5 Pamphlet on Tricks of the Cold War
The Venona Project
The One Time Pad
MICE -- Money, Ideology, Coercion, Ego, the motives for spying