The informant was by then a high officer, perhaps vice-president, of the Communist Party in San Francisco; the informant claimed to have been a charter member of the Workers' Party of America (predecessor of the Communist Party), to have come to San Francisco in 1934, and to have been a member of the "Inner Circle" of party leadership. Most reports focus on activities at the Communist Party headquarters at 121 Haight Street, other party activities, activities of the American Civil Liberties Union, unions, and the California Youth Congress meeting in Los Angeles.