Harrison George was a senior Communist Party of the United States (CPUSA) leader, editor of the party's West Coast newspaper, People's World, and member of the Comintern's Pan-Pacific Trade Union Secretariat (PPTUS).
The PPTUS was established in 1927, with Earl Browder as its General Secretary. Documents from the Comintern Archive in Moscow reveal the relationship between Browder and George, who at the time was an Industrial Workers of the World leader and Communist mole in the Wobblies. The minutes of a PPTUS meeting were signed by George and Tsutomu Yano, who would later recruit people for the Richard Sorge spy ring in Japan. Intercepted Soviet intelligence traffic is alleged to reveal a covert relationship George had as a cutout transmitting information from James Walter Miller, who worked in the U.S. Post Office's Office of Censorship to the San Francisco KGB.