Rare notebooks of Alan Turing’s unpublished code-breaking work during the Second World War have been saved for the nation thanks to a charity campaign.
The British mathematician, credited with breaking the Enigma code, seldom preserved his own research notes, meaning evidence of his papers was often lost. But now a significant archive has been saved by a campaign spearheaded by the Friends of the Nations' Libraries, after the government stepped in to stop its sale for £400,000 unless private funds were raised.
