Colossus

Jack Copeland is Professor of Philosophy at the University of Canterbury in New Zealand and Director of the Turing Archive for the History of Computing, and has been studying the history of Bletchley Park since 1992. He is a contributor to Scientific American and his previous publications include Artificial Intelligence, (Blackwell, 1993), Logic and Reality (OUP, 1996), Turing's Machines (OUP, forthcoming), The Essential Turing (OUP, 2004), and Alan Turing's Automatic Computing Engine (OUP, 2005).

• 1. A Brief History of Cryptography from Caesar to Bletchley Park ; 2. How It Began: Bletchley Park Goes to War ; 3. The German Tunny Machine ; 4. Colossus, Codebreaking, and the Digital Age ; 5. Machine Against Machine ; 6. D-Day at Bletchley Park ; 7. Intercept! ; 8. Colossus ; 9. Colossus and the Rise of the Modern Computer ; 10. The PC-User's Guide to Colossus ; 11. Of Men and Machines ; 12. The Colossus Rebuild ; 13. Mr Newman's Section ; 14. Max Newman-Mathematician, Codebreaker and Computer Pioneer ; 15. Living with Fish: Breaking Tunny in the Newmanry and the Testery ; 16. From Hut 8 to the Newmanry ; 17. Codebreaking and Colossus ; 18. Major Tester's Section ; 19. Setter and Breaker ; 20. An ATS Girl in the Testery ; 21. The Testery and the Breaking of Fish ; 22. Dollis Hill at War ; 23. The British Tunny Machine ; 24. How Colossus was Built and Operated-One of Its Engineers Reveals Its Secrets ; 25. Bletchley Park's Sturgeon-The Fish That Laid No Eggs ; 26. Geheimschreiber Traffic and Swedish Wartime Intelligence ; A1 Timeline: The Breaking of Tunny ; A2 The Teleprinter Alphabet ; A3 The Tunny Addition Square ; A4 My Work at Bletchley Park ; A5 The Tiltman Break ; A6 Turingery ; A7 Dc-Method ; A8 Newman's Theorem ; A9 Rectangling ; A10 The Motor Wheels and Limitations ; A11 Motorless Tunny ; A12 Origin of the Fish Cypher Machines

Copeland's book is a masterpiece.