New York City. Under the supervision of the famous cryptographer Herbert O. Yardley, a team of twenty code breakers was employed in what was called the Black Chamber. Yardley arranged for Western Union, which had the telegraph monopoly in America, to provide the Black Chamber with all the telegrams coming into the

amber.” Yardley arranged for HOUSE_OVERSIGHT_020306 --- PAGE BREAK --- 155 Western Union, which has the telegraph monopoly in America, to provide the Black Chamber with all the telegrams coming into the United States. “Its far-seeking eyes penetrate the secret conference chambers at Washington, Tokyo, London, Pa