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Nathan Silvermaster Group
Nathan Silvermaster was a leader of a Soviet espionage ring. This espionage investigation from 1945 to 1959 uncovered Soviet placed agents working within the U.S. Government. The case exposed twenty-seven individuals in the Silvermaster ring who gathered information from at least six federal agencies to turn over to the Soviets. No indictments for espionage were returned against any subjects in the case by any Grand Jury.
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