References
- Alexander , C. H. O'D. C.B.E. Cryptographic History of Work on the German Naval Enigma, TNA (PRO) HW 25/1.
- Burke , Colin. 2005 . ‘Raising the Intelligence Bar Far, Far Too High: The Bombes and the U-boat War’ , forthcoming; and, presentation at NSA Historical Symposium.
- Burke , Colin. July 2008 . “The Last Bombe Run,” Cryptologia , 32 ( 3 ): 277 – 9 .
- Copeland, B. Jack (ed.). 2004 . The Essential Turing: The Ideas That Gave Birth to the Computer Age. London : Oxford University Press .
- DeBrosse , Jim. 2004 . The Secret in Building 26: the Untold Story of America's Ultra War Against the U-boat Enigma Codes. , New York : Random House , pp. 24 – 52 .
- Erskine , Ralph and Michael Smith (eds,). 2001 . Action This Day. , London : Bantam .
- Erskine, Ralph , I. J. (Jack) Good , Eric A. Weiss. January–March 2001 . Obituary , “Joan Elisabeth Clarke Murray,” IEEE Annals of the History of Computing , 67 – 71 .
- Erskine , Ralph. 2002 , “What Did the Sinkov Mission Receive From Bletchley Park ,” Cryptologia , 24 ( 2 ): 97 – 109 .
- Erskine , Ralph. 2003 . “From the Archives: What the Sinkov Mission Brought to Bletchley Park,” Cryptologia , 27 ( 2 ): 111 – 118 .
- Erskine , Ralph. May 2008 . “Murray [Clarke], Joan Elisabeth Lowther (1917–1996),” Oxford Dictionary of National Biography , Oxford University Press, online edition.
- et al. , July 2008 . “Captured Kriegsmarine Enigma Documents at Bletchley Park.” Cryptologia , 32 ( 3 ): 199 – 219 .
- Gladwin, Lee. Oct . 2007 . “Bulldozer: A Cribless Rapid Analytical Machine (RAM) Solution to Enigma and its Variations” , Cryptologia , 31 ( 4 ): 305 – 331 .
- Hinsley , F. H. and Alan Stripp (eds .). 1993 . Codebreakers: The Inside Story of Bletchley Park . London : Oxford University Press , pp. 113 – 118 .
- Hinsley , F. H. ( Francis Harry ), with E. E. Thomas , C. F. G. Ransom , R. C. Knight . 1979–1988 . British Intelligence in the Second World War: Its Influence on Strategy and Operations. London : H.M. Stationery Off .
- Mahon , A. P. The History of Hut Eight 1939–1945, TNA (PRO) HW 25/2.
- NARA RG 457 Box 1124 Acc 17640, OP20 G, ‘History of the Bombe Project, 30 May, 1944.
- NARA RG 457 Box 1414, Joseph Wenger, History of the Bombe Project.
- NARA RG38 Bombe Correspondence, CNSG Library, box 183/3–24–44, Alexander to Church.
- NARA RG457 HCC, Box 600, NR4815 ZEMA57, 26 March 1945, The Bulldozer.
- NARA RG457 HCC, Box 940, NR2738 CBMI33 2714A, “Chronology of the Co-operation Between SSA and the London Office, GCCS.
- NARA, RG38 CNSG Library, 5750/159, 3–1946.
- NARA, RG457 HCC, Box 621, German Cipher Key Logs.
- NSA Technical Journal , 20 ( 4 ) Fall 1975 , pp. 41 – 46 .
- NSA Cryptologic Almanac 50th Anniversary Series, “Madame X: Agnes Driscoll in Twilight, The Last Years of the Career of Agnes Driscoll, 1941–1957,” NSA FOIA 2010 release #52567.
- NSA FOIA release, History of NCML and OP20G 4e.
- Sebag-Montefiore , H. 2000 . Enigma: the Battle for the Code. London : Weidenfeld and Nicolson .
- TNA (PRO) HW 3/93.
- TNA (PRO) HW 14/45 August 18, 1941 , Denniston , “Interrupted Conference with Commander Safford.”
- TNA (PRO) HW 25/19, 20.
- TNA (PRO) HW 3/164. ‘Squadron Leader Jones’ Section.’
- Whitehead , David. Oct . 1996 . “Cobra and Other Bombes.” Cryptologia , 20 ( 4 ): 289 – 307 .