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Herbert Yardley
Herbert Osborn Yardley (April 13, 1889 – August 7, 1958) was an American cryptologist. He founded and led the cryptographic organization the Black Chamber. Under Yardley, the cryptanalysts of The American Black Chamber broke Japanese diplomatic codes and were able to furnish American negotiators with significant information during the Washington Naval Conference of 1921-1922. He wrote ''The American Black Chamber'' (1931) about his experiences there. He later helped the Nationalists in China (1938–1940) to break Japanese codes. Following his work in China, Yardley worked briefly for the Canadian government, helping it set up a cryptological section (Examination Unit) of the National Research Council of Canada from June to December 1941. Yardley was let go due to pressure from Washington.
==Early life==
Yardley was born in 1889 in Worthington, Indiana. He learned to use the telegraph from his father, Robert Kirkbride Yardley, a station master and telegrapher for a railroad. His mother, Mary Emma Osborn Yardley, died when he was 13.
After graduation from high school in 1907, Yardley went to the University of Chicago, but dropped out after one year and went back to Worthington, where he worked as a telegrapher for a railroad.〔LaFeber, Walter. ''The Clash.'', pp. ??, ISBN 0-393-31837-0〕 He spent his free time learning how to play poker and applied his winnings towards his further schooling. In 1912, after passing the civil service exam, he was hired as a government telegrapher.
Yardley began his career as a code clerk in the U.S. State Department. He accepted a Signal Corps Reserve commission and served as a cryptologic officer with the American Expeditionary Forces in France during World War I.
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