McKay, Sinclair. <br/><br/>
The lost world of Bletchley Park :  an illustrated history of the wartime codebreaking centre / 
Sinclair McKay. 
 - [London] :  Aurum Press,  [2013]. 
 - 191 p. :  ill. (some col.), facsims., plans, ports. ;  26 cm. 
<br/><br/> Illustrations on endpapers. 
<br/><br/><label>ISBN: </label>9781781311912 : (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Electronic intelligence--Great Britain.<br/>World War, 1939-1945--Cryptography.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Bletchley Park (Milton Keynes, England)--History--20th century.
<br/><br/><label>Dewey Class. No.: </label>942.591