The Code Book
by Simon Singh [652.8 Sin]Battle of Wits: The Complete Story of Codebreaking in World War II
by Stephen Budiansky [940.548 Bud]Enigma
by Robert HarrisBetween Silk and Cyanide: A Code-maker’s War – 1939-1945
by Leo Marks [940.548 Mar]The Secret Speech
by Tom Rob SmithThe Lost Symbol
by Dan BrownThe Lives of Others
[DVD Lives]