West wind clear cryptology and the winds message controversy : a documentary history /Format: [electronic resource] :
Author: Hanyok, Robert J.
Publisher: [Fort Meade, Md.] : Center for Cryptologic History, National Security Agency,
Date: 2008. This title can be found in 1 Iowa libraries.
Eavesdropping on hell historical guide to Western communications intelligence and the Holocaust, 1939-1945 /Format: [electronic resource] :
Author: Hanyok, Robert J.
Publisher: [Fort George G. Meade, Md.] : Center for Cryptologic History, National Security Agency,
Date: 2005. This title can be found in 2 Iowa libraries.
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