| | *FBI report, “Soviet Activities in the United States,” 25 July 1946, Clark M. Clifford papers, Truman Library. | | *FBI report, “Soviet Activities in the United States,” 25 July 1946, Clark M. Clifford papers, Truman Library. |
| | *William Stevenson, ''Intrepid’s Last Case'' (New York: Villard Books, 1983). | | *William Stevenson, ''Intrepid’s Last Case'' (New York: Villard Books, 1983). |
| | *New York FBI report, 5 April 1946, Comintern Apparatus file, serial 5236; FBI report, “Soviet Espionage Activities,” 19 October 1945,” attached to Hoover to Vaughan, 19 October 1945, President's Secretary's Files, Harry S. Truman Library, Independence, Mo.; | | *New York FBI report, 5 April 1946, Comintern Apparatus file, serial 5236; FBI report, “Soviet Espionage Activities,” 19 October 1945,” attached to Hoover to Vaughan, 19 October 1945, President's Secretary's Files, Harry S. Truman Library, Independence, Mo.; |