The Shameful Years: Thirty Years of Soviet Espionage in the United States, U.S. Congress, House of Representatives, Committee on Un-American Activities, 30 December 1951.
"The Shameful Years: Thirty Years of Soviet Espionage in the United States," ngày 30 tháng 12 năm 1951, U.S. Congress, House of Representatives, Committee on Un-American Activities, 39–40.