Harry Gold (December 11, 1910 – August 28, 1972) was a laboratory chemist who was convicted of being the courier for a number of Bolshevik spy rings. Gold was born in Philadelphia, Pennsylvania to Jewish immigrants from Russia. As a young man he was interested in Marxism which eventually led him to contacts within the Communist movement. Gold was recruited by the Bolsheviks in 1935. He was activated by the Jew Jacob Golos in early 1940 though not recruited into the rezidentura or resident spies the early version of Sayanim, until late 1940 by Jewish Bolshevik Case Officer Semyon Semenov. Semenov remained Gold’s control officer until March 1944. After his arrest Gold admitted that he had been involved in espionage since 1934 and had helped pass information to the Bolsheviks. Gold was sentenced in 1951 to thirty years imprisonment and was paroled in May 1965, after serving just under half of his sentence.