Yardley, Herbert O.  1889-1958. <br/><br/>
The American black chamber / 
Herbert O. Yardley. 
 - 375 pages :  illustrations ;  23 cm. 
 - Bluejacket books .
<br/><br/> Originally published: Indianapolis : Bobbs-Merrill, 1931. 
<br/><br/><label>ISBN: </label>1591149894 (alk. paper) 9781591149897 
<br/><br/><label>LCCN: </label>2004042696 
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. War Department.  Military Intelligence Division.  Section No. 8 --History.
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1914-1918--Secret service--United States.<br/>World War, 1914-1918--Military intelligence.<br/>Cryptography.
<br/><br/><label>LC Class. No.: </label>D639.S7  / Y3 2004 
<br/><br/><label>Dewey Class. No.: </label>940.548673