Blum, Howard. <br/><br/>
I pledge allegiance-- :  the true story of the Walkers : an American spy family / 
by Howard Blum. 
 - New York :  Simon & Schuster,  c1987. 
 - 438 p., [16] p. of plates :  ill. ;  25 cm. 
<br/><br/>Bibliography: p. 421-436. 
<br/><br/><label>ISBN: </label>0671626140 
<br/><br/><label>LCCN: </label>87020700 
<br/><br/><label>Subjects--Personal Names: </label><br/>Walker, John Anthony, 1937- <br/>Walker family.<br/>Whitworth, Jerry, 1939- 
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States. Navy --Communication systems.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Espionage, Soviet--History.--United States<br/>Anti-submarine warfare--History.--United States<br/>Anti-submarine warfare--History.--Soviet Union
<br/><br/><label>LC Class. No.: </label>UB271.R92  / W343 1987 
<br/><br/><label>Dewey Class. No.: </label>327.1/2/0924  B