John Walker: American naval officer who formed a family spy ring that passed highly damaging secrets to the Soviet Union | The Independent | The Independent
Hampton Roads Naval Museum: Thirty Years Ago: A Ring is Broken
The Walker Spy Ring | HistoryofSpies.com - Your Resource for Espionage on the Web
1985: Retired CWO John Walker was arrested for spying. : Cryptologic Dates in History Calendar
Amazon.com: The John Walker Spy Story: The US Navy's biggest betrayal ( Espionage Book 1) eBook : Editors, Histrophillia: Kindle Store
John Anthony Walker - Wikipedia
John Walker - Counterintelligence - LibGuides at Naval War College
Year of the Spy (1985) — FBI
Spy Michael Walker Inside Automobile by Bettmann
American spy who led ring passing Soviets information for 17 years during Cold War dies in prison | The Independent | The Independent
Ex-US sailor John A. Walker who spied for Soviets dies in prison hospital