*Colloms testimony, “American Aspects of Assassination of Leoh Trotsky,” U.S. Congress, House of Representatives, Un-American Activities Committee, 82nd Cong., 1st sess., 1951
*Colloms testimony, “American Aspects of Assassination of Leoh Trotsky,” U.S. Congress, House of Representatives, Un-American Activities Committee, 82nd Cong., 1st sess., 1951