poems written by Alan Turing during world War II sold for £ 700,000 . It was written at the Bletchley police code - breaking headquarters in 1942 . Only extensive unpublished manuscript thought to exist , auctioneer declined .
Notebook written by Alan Turing during World War II sold for £700,000 . It was written at the Bletchley Park code-breaking headquarters in 1942 . Only extensive Turing manuscript thought to exist , auctioneer said .