Alan Turing on Sark, 1931
Not just a beautiful mind

Surf with the

ALAN TURING
INTERNET SCRAPBOOK

maintained by Andrew Hodges,
author of Alan Turing: the Enigma

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A Virtual Tour of Alan Turing

In 1995, when the Web was just starting, I formulated this concept of an 'Internet Scrapbook'. In those days there was so little on the Web that it was possible to think of collecting all the references to Alan Turing on the Internet and bringing them together on a few webpages. The website creators of those days formed a small club. Mutual hyperlinks made it exciting to collaborate in the new world created by Alan Turing's invention, the computer.

But before long, there was far too much material for this to be possible. Google and Wikipedia rapidly overtook my efforts to collect and collate. Hyperlinks would break, as institutions reorganised their websites without any respect for external links to their internal pages. This has been a real difficulty for pages intended to remain stable over years.

So the principle behind these Scrapbook pages is now obsolete. I am phasing out these pages, which in 2026 are full of broken links. But they are also full of references, comments and images which add something to the material in my original book. So over time, I will incorporate this content in a more systematic, formal and definitive update of the book. Meanwhile, you are welcome to browse the pages as an informal look at the many topics raised by Alan Turing's life and work.


Empire of the mind, 1912-1928
The inspiration of life and death, 1928-1932
Turing Machines, with Turing Machines simulated in JavaScript
Beyond the Turing Machine: across the Atlantic
Critical cryptanalysis: the Enigma war
Alan Turing as UK-USA link, 1942 onwards
Critical cryptanalysis: the electronic war
Who invented the computer?
Alan Turing's Electronic Brain with The world class distance runner
Machines and men's minds, Manchester 1948-1950
The Turing Test
Growth, form and crisis, 1951-1952
Unseen worlds: Defiant until Death, 1952-1954


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