* ''Venona: Decoding Espionage in America'', John Earl Haynes and Harvey Klehr, Yale University Press, (1999), pgs. 242–244, 248. ISBN 0-300-07150-7 | * ''Venona: Decoding Espionage in America'', John Earl Haynes and Harvey Klehr, Yale University Press, (1999), pgs. 242–244, 248. ISBN 0-300-07150-7 |