Blum Howard  1948 <br/><br/>
I pledge allegiance-- :  the true story of the Walkers : an American spy family / 
by Howard Blum. 
 - New York :  Simon & Schuster,  1987. 
 - 438 p., [16] p. of plates :  ill. ;  25 cm. 
<br/><br/>Bibliography: p. 421-436. 
<br/><br/><label>ISBN: </label>0671626140 
<br/><br/><label>Subjects--Personal Names: </label><br/>Walker John Anthony 1937 <br/>Walker family<br/>Whitworth Jerry
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States--Communication systems
<br/><br/><label>Subjects--Topical Terms: </label><br/>Espionage--History--Soviet Union--20th century<br/>Espionage--History--United States--20th century<br/>Antisubmarine warfare
<br/><br/><label>LC Class. No.: </label>UB271.R92