Alan Turing Decoded: The Man They Called Prof

X, Y and Z: The Real Story of How Enigma Was Broken, Edition 2

Enigma Traitors: The Struggle to Lose the Cipher War

The Story of Computing

The Enigma Story: The Truth Behind the 'Unbreakable' World War II Cipher

Clearing and Settlement: Edition 3

Clearing and Settlement: Edition 3

The Codebreakers of Bletchley Park: The Secret Intelligence Station that Helped Defeat the Nazis