"Since 1917" . . . . . . . . . . . . "Investigation of un-American propaganda activities in the United States : hearings before the Committee on un-American Activities, House of Representatives, Eightieth Congress, first session, on H.R. 1884 and H.R. 2122, bills to curb or outlaw the Communist Party of the United States" . . "Investigation of un-American propaganda activities in the United States hearings before the Committee on Un-American Activities, House of Representatives, Eightieth Congress, first session on H.R. 1884 and H.R. 2122, bills to curb or outlaw the Communist Party of the United States, March 24, 1947, [March 26, 1947]"@en . . . "Investigation of un-American propaganda activities in the United States hearings before the Committee on un-American Activities, House of Representatives, Eightieth Congress, first session, on H.R. 1884 and H.R. 2122, bills to curb or outlaw the Communist Party of the United States"@en . . . . . .