DAVID KAHN. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. New Haven: Yale University Press. 2004. Pp. xxi, 318. $32.50.
DAVID KAHN. The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking. New Haven: Yale University Press. 2004. Pp. xxi, 318. $32.50.