*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. | *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. |