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Bletchley Park (3rd ed.), Sutton Publishing, Gloucestershire, ISBN 978-0-7509-2355-2 A guided tour of the history and geography of the Park, written by...

Kept Secret: Ultra's Base at Bletchley Park (3rd ed.), Sutton, ISBN 978-0-7509-2355-2 Erskine, Ralph; Smith, Michael, eds. (2011), The Bletchley Park Codebreakers...