science.cryptography.bletchley-park (date)
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June 24, 2008
{BBC Website} Audio slideshow: Colossus Mark II rebuild - [URL corrected]
,
Robert (Bob) Waixel
{BBC Website} Audio slideshow: Colossus Mark II rebuild
,
Robert (Bob) Waixel
June 07, 2008
4R Enigma at Quorn & Woodhouse Station
,
Mark Baldwin
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