The American Black Chamber


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The American Black Chamber - Yardley, Herbert O

During the 1920s Herbert O. Yardley was chief of the first peacetime cryptanalytic organization in the United States, the ancestor of today's National Security Agency. Funded by the U.S. Army and the Department of State and working out of New York, his small and highly secret unit succeeded in breaking the diplomatic codes of several nations, ...

The American Black Chamber 2013, US Naval Institute Press

ISBN-13: 9781591149897

Trade paperback

American Black Chamber 2010, Amereon Limited, Mattituck, NY

ISBN-13: 9780848812300

Reprint edition


The American Black Chamber 1990, Aegean Park Press

ISBN-13: 9780894121548

Trade paperback

American Black Chamber 1981, Ballantine Books

ISBN-13: 9780345298676

Mass-market paperback