Yes. The Rosenbergs trial happened in the '50's. They were executed by electrocution.

The Rosenbergs were convicted on March 29, 1951, and sentenced to death under Section 2 of the Espionage Act. The couple were the only two American civilians to be executed for espionage-related activity during the Cold War. Judge Kaufman noted that he held them responsible not only for espionage but also for the deaths of the Korean War, since the information leaked to the Russians was believed to help them develop the A-bomb and stimulate Communist aggression in Korea. Their case has been at the center of the controversy over communism in the United States ever since.

https://www.atomicarchive.com/resources/biographies/rosenbergs.html