O'Toole, G. J. A. <br/><br/>
The encyclopedia of American intelligence and espionage :  from the revolutionary war to the present / 
G.J.A. O'Toole 
 - New York :  Facts on File,  1988 
 - 539 p. :  ill. ;  29 cm. 
<br/><br/>p. 512 - 539 
<br/><br/><label>ISBN: </label>0816010110 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Espionage, American--History--Dictionaries<br/>Espionage--History--Dictionaries--United States