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John Herivel, BP Codebreaker, Returns! | by Bletchley Park Trust
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John Herivel, BP Codebreaker, Returns!

Bletchley Park Codebreaker, John Herivel, inventor of the Herivel Tip, returns to give a public lecture. Gordon Welchman famously said of the tip, 'Herivel, this will not be forgotten'.

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Taken on May 10, 2006