Julius and Ethel Rosenberg were a married couple convicted of conspiracy to commit espionage in 1951. They were accused of heading a spy ring that passed top-secret information concerning the atomic bomb to the Soviet Union. They were both put to death in the electric chair on June 19, 1953.
(From: https://www.history.com/this-day-in-history/julius-and-ethel-rosenberg-executed)
The Man Behind the Rosenbergs by 
