Memorabilia
Alan Turing's handwritten notebook sells for $1m
Alan Turing produced the handwritten notebook in 1942, while at Bletchley Park
Alan Turing's 1942 notebook set to star in Bonhams sale
Alan Turing filled the notebook in 1942, during his time at Bletchley Park
Scott Terra Nova notebook found at Antarctic base
A notebook from Scott's doomed Terra Nova expedition was unearthed recently
