[NativeNewYorker]

I've read a couple of the recent Venona books, at it is quite frightening to realize how deeply penentrated the US govt was, at its highest levels, at the height of the Cold War.

Those books, plus Chambers' Witness, are must-reads.

[DPB101]

Chapter one of John Earl Haynes and Harvey Klehr's book on Venona is on-line here