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By Herbert O. Yardley

Through the Twenties Herbert O. Yardley used to be leader of the 1st peacetime cryptanalytic association within the usa, the ancestor of state-of-the-art nationwide defense supplier. Funded by way of the U.S. military and the dep. of kingdom and dealing out of recent York, his small and hugely mystery unit succeeded in breaking the diplomatic codes of numerous countries, together with Japan. The decrypts performed a serious function in U.S. international relations. regardless of its impressive successes, the Black Chamber, because it got here to recognized, was once disbanded in 1929. President Hoover's new Secretary of kingdom Henry L. Stimson refused to proceed its investment with the now-famous remark, "Gentlemen don't learn different people's mail." In 1931 a upset Yardley brought on a sensation while he released this publication and printed to the area precisely what his business enterprise had performed with the key and unlawful cooperation of approximately the total American cable undefined. those revelations and Yardley's correct to post them set into movement a clash that keeps to at the present time: the precise to freedom of expression as opposed to nationwide safety. as well as supplying an exposé on post-World struggle I cryptology, the ebook is full of fascinating tales and personalities.

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