Morton Sobell Free As Spy Term Ends. New York Times, January 15, 1969. [dostęp 2008-07-07]. Cytat: Morton Sobell, sentenced to 30 years for a wartime espionage conspiracy to deliver vital national secrets to the Soviet Union, was released from prison yesterday after serving 17 years and 9 months.
nytimes.com
Sam Roberts: For First Time, Figure in Rosenberg Case Admits Spying for Soviets. [w:] New York Times [on-line]. September 11, 2008. [dostęp 2008-09-11]. Cytat: In an interview on Thursday, Mr. Sobell, who served nearly 19 years in Alcatraz and other federal prisons, admitted for the first time that he had been a Soviet spy.
