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Ultra (cryptography)
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===Public interest=== A succession of books by former participants and others followed. The official history of British intelligence in World War II was published in five volumes from 1979 to 1988, and included further details from official sources concerning the availability and employment of Ultra intelligence. It was chiefly edited by [[Harry Hinsley]], with one volume by [[Michael Howard (historian)|Michael Howard]]. There is also a one-volume collection of reminiscences by Ultra veterans, ''Codebreakers'' (1993), edited by Hinsley and Alan Stripp.
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