Breaking the ring
By: John Barron.
Publisher: Houghton Mifflin
Published: 1987
Place of publication: Boston
Language: eng
Number of pages: 244
Subjects: Walker, John Anthony, 1937-; Walker family.; Whitworth, Jerry, 1939-; United States. Federal Bureau of Investigation.; United States. Navy -- Communication systems.; Espionage, Soviet -- United States -- History.
Description: The story behind the search for the mysterious traitor in the FBI who passed millions of military secrets to the Soviet Union over a fifteen year period.
Notes: Bibliography: p. 225-236.
Includes index.