The reader of gentlemen's mail Herbert O. Yardley and the birth of American codebreaking / [electronic resource] :
David Kahn.
- New Haven : Yale University Press, c2004.
- xxi, 318 p. : ill. ; 25 cm.
Includes bibliographical references (p. 291-304) and index.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2009. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.
Yardley, Herbert O. 1889-1958.
Cryptographers--United States--Biography. World War, 1914-1918--Cryptography.