Talk:John Herivel

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Polish used Herivel tip? See: Hinsley, British Intelligence in the Second World War, Part 2: Volume 3, Part 2, Page 954

Rejewski...named Knox's reduction method, Cillies and the `Herivel tip' as the methods used by the cryptanalysts at `Cadix' near Uzes, to reader some Enigma from October 1940 to November 1942.