Lona Cohen (Russian: Леонтина Владиславовна Коэн, Leontina Vladislavovna Koen; January 11, 1913 – December 23, 1992), born Leontine Theresa Petka, also known as Helen Kroger, was an American who spied for the Soviet Union. She is known for her role in smuggling atomic bomb diagrams out of Los Alamos.
Lona Cohen (Russian: Леонтина Владиславовна Коэн, Leontina Vladislavovna Koen; January 11, 1913 – December 23, 1992), born Leontine Theresa Petka, also known as Helen Kroger, was an American who spied for the Soviet Union. She is known for her role in smuggling atomic bomb diagrams out of Los Alamos.
Source: Wikipedia "Lona Cohen" · CC BY-SA 4.0
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