How I Discovered World War II's Greatest Spy and Other Stories of Intelligence and Code

David Kahn is universally regarded as the dean of intelligence historians. He is the author of Seizing the Enigma: The Race to Break the German U-Boats Codes, 1939-1943. His pathbreaking book The Codebreakers, the classic history of codemaking and codebreaking remains in stalwart print 45 years after its publication (portions have been updated). He is also the co-founder of the Taylor & Francis journal, Cryptologia, which continues to attract new subscribers.