Editing Ultra (cryptography) (section)

==Sources==
{{Refbegin |30em }}
*{{Cite book|last=Aldrich |first=Richard J. |title=GCHQ: The Uncensored Story of Britain's Most Secret Intelligence Agency |publisher=HarperCollins |year=2010 |isbn=978-0-00-727847-3}}
* {{citation | last = Bamford | first = James | author-link = James Bamford | title = [[Body of Secrets]] | publisher = Doubleday | isbn=0-385-49907-8 | year=2001}}
* {{citation | last = Bennett | first = Ralph | title = Behind the Battle: Intelligence in the War with Germany | place = London | publisher = Random House | orig-year = 1994 | year = 1999 | edition = Pimlico: New and Enlarged | isbn = 0-7126-6521-8 }}
* {{citation | last = Bertrand | first = Gustave | author-link = Gustave Bertrand | year = 1973 | title = Enigma ou la plus grande énigme de la guerre 1939–1945 (Enigma: The Greatest Enigma of the War of 1939–1945)| location = Paris | publisher = Librairie Plon }}
* {{citation | last = Beesly | first = Patrick | author-link = Patrick Beesly | title = Very Special Intelligence: The Story of the Admiralty's Operational Intelligence Centre 1939–1945 | year = 1977 | publisher = Sphere Books Limited | isbn = 0-7221-1539-3 }}
* {{citation | last = Budiansky | first = Stephen | year = 2000 | author-link = Stephen Budiansky | title = Battle of wits: The Complete Story of Codebreaking in World War II | publisher = Free Press | isbn = 978-0-684-85932-3 | url = https://archive.org/details/battleofwitscomp00budi }} A short account of World War II cryptology which covers more than just the Enigma story.
* {{cite news | last = Brzezinski | first = Matthew | author-link = Matthew Brzezinski | title = Giving Hitler Hell | date = 24 July 2005 | newspaper = Washington Post | url = https://www.washingtonpost.com/wp-dyn/content/article/2005/07/21/AR2005072101680_5.html | access-date = 16 March 2016 }}
* {{citation | last = Calvocoressi | first = Peter | author-link = Peter Calvocoressi | title = Top Secret Ultra | place = Kidderminster, England | publisher = M & MBaldwin | orig-year = 1980 | year = 2001 | isbn = 978-0-947712-41-9 }}
* {{citation | last = Churchill | first = Winston | author-link = Winston Churchill | title = The Second World War, Volume 2: Their Finest Hour | orig-year = 1949 | year = 2005 | edition = Penguin Classics | page = 529 | publisher = Penguin | isbn = 978-0-14-144173-3 }}
* {{citation | last = Copeland | first = Jack | author-link = Jack Copeland | year = 2004 |  contribution =  Enigma | editor-last = Copeland | editor-first = B. Jack | editor-link = Jack Copeland | title = The Essential Turing: Seminal Writings in Computing, Logic, Philosophy, Artificial Intelligence, and Artificial Life ''plus'' The Secrets of Enigma | location = Oxford | publisher = Oxford University Press | isbn = 0-19-825080-0 }}
* {{cite book |last=Crowdy | first=Terry | year=2011 | title=The Enemy Within: A History of Spies, Spymasters and Espionage | publisher=Bloomsbury Publishing | isbn=9781780962436 }}
* {{cite journal |last=Deutsch |first=Harold C |author-link=Harold C. Deutsch |date=1977 |title=The Historical Impact of Revealing the Ultra Secret |pages=16–32 |journal=[[Parameters (journal)|Parameters]] |publisher= U.S. Army War College |volume = 7 |issue=1 |url=https://www.nsa.gov/Portals/70/documents/news-features/declassified-documents/cryptologic-spectrum/ultra_secret.pdf |doi=10.55540/0031-1723.1102 }}
* {{citation | last = Farago | first = Ladislas | author-link = Ladislas Farago | title = The game of the foxes: British and German intelligence operations and personalities which changed the course of the Second World War | publisher = Pan Books | orig-year = 1971 | year = 1974 | isbn = 978-0-330-23446-7 }} <!--Has been criticised for inaccuracy and exaggeration -->
* {{Citation | last = Farley | first = R. D. | title = Oral History Interview NSA-OH-40-80 with Arthur J. Levenson | date = 25 November 1980 | url = https://www.nsa.gov/news-features/declassified-documents/oral-history-interviews/assets/files/nsa-oh-40-08-levenson.pdf | access-date = 24 September 2016 }} 
* {{citation | last = Ferris | first = John Robert | title = Intelligence and strategy: selected essays | publisher = Routledge | year = 2005 | edition = illustrated | isbn = 978-0-415-36194-1 }}
* {{citation | last = Gannon | first = Paul | title = Colossus: Bletchley Park's Greatest Secret | year = 2006 | publisher = Atlantic Books | location = London | isbn = 978-1-84354-331-2 }}
* {{Citation|last=Hanyok|first=Robert J.|title=Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939–1945|year=2004|publisher=Center for Cryptographic History, National Security Agency|url=https://www.jewishvirtuallibrary.org/jsource/Holocaust/nsarep.pdf}}
* {{citation | editor-last = Hinsley | editor-first = F. H.| editor-link = Harry Hinsley | editor2-last = Stripp | editor2-first = Alan | title = Codebreakers: The inside story of Bletchley Park | location = Oxford | publisher = Oxford University Press  | edition = OU Press paperback | year = 1993 | isbn = 978-0-19-280132-6 }}
* {{harvc |last=Hinsley |first=F. H. |c=Introduction: The Influence of Ultra in the Second World War |in1=Hinsley |in2=Stripp |year=1993}}
* {{cite book | last = Hinsley | first = F. H. | author-link = Harry Hinsley | title = British intelligence in the Second World War | place = Cambridge | publisher = Cambridge University Press | year = 1993a | isbn = 978-0-521-44304-3}}
* {{citation | last = Hinsley | first = F. H. | author-link = Harry Hinsley | title = The Influence of ULTRA in the Second World War | orig-year = 1993 | year = 1996 | url = http://www.cdpa.co.uk/UoP/HoC/Lectures/HoC_08e.PDF | access-date = 23 July 2012 }} Transcript of a lecture given on Tuesday 19 October 1993 at Cambridge University
* {{cite news | last = Hunt | first = David | author-link = David Hunt (diplomat) | title = The raid on Coventry | newspaper = The Times | page = 11 | date = 28 August 1976 }}
* {{cite book | last = Jones | first = R. V. | author-link = Reginald Victor Jones | title = Most Secret War | place = London | publisher = Book Club Associates | year = 1978 | isbn = 978-0-241-89746-1 | url = https://archive.org/details/mostsecretwar0000jone }}
* {{citation | last = Kahn | first = David | author-link = David Kahn (writer) | title = The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet | place = New York | publisher = Macmillan | year = 1967 | edition = 1st | isbn = 0-02-560460-0 }}
* {{cite book | last = Kahn | first = David | author-link = David Kahn (writer) | title = The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet | place = New York | publisher = Simon & Schuster | orig-year = 1967 | year = 1997 | edition = 2nd Revised | isbn = 978-0-684-83130-5 }}
* {{cite news | last = Kahn | first = David | author-link = David Kahn (writer) | title = Enigma Unwrapped: Review of F. W. Winterbotham's ''The Ultra Secret'' | newspaper = New York Times Book Review | pages = 5 | date = 29 December 1974 }}
* {{cite book | last = Knightley | first = Phillip | author-link = Phillip Knightley | title = The Second Oldest Profession | year = 1986 | publisher = W.W. Norton & Co | isbn = 0-393-02386-9 | url = https://archive.org/details/secondoldestprof00knig }}
* {{citation | last = Kozaczuk | first = Władysław | author-link = Władysław Kozaczuk | year = 1984 | title = Enigma: How the German Machine Cipher was Broken, and how it was Read by the Allies in World War Two, ''edited and translated by Christopher Kasparek [a revised and augmented translation of ''W kręgu enigmy'', Warsaw, Książka i Wiedza, 1979, supplemented with appendices by Marian Rejewski, Frederick, MD'' | publisher = University Publications of America | isbn = 978-0-89093-547-7}} <!--This is the standard reference on the crucial foundations laid by the Poles for World War II Enigma decryption. -->
* {{cite book | last = Lewin |first = Ronald | author-link = Ronald Lewin | title = Ultra goes to War | orig-year = 1978 | year = 2001 | edition = Penguin Classic Military History | isbn = 978-0-14-139042-0 | publisher = Penguin Group | location = London }} <!-- Focuses on the battle-field exploitation of Ultra material. -->
* {{citation | last = Mallmann-Showell | first = J.P. | title = German Naval Code Breakers | publisher = Ian Allan Publishing | year = 2003 | isbn = 0-7110-2888-5 | location = Hersham, Surrey | oclc=181448256 }}
*{{citation | last = Momsen | first = Bill | url = http://home.earthlink.net/~nbrass1/4enigma.htm | title = Codebreaking and Secret Weapons in World War II: Chapter IV 1941–42 | publisher = Nautical Brass | year = 2007 | orig-year = 1977 | access-date = 2008-02-18 | archive-date = 26 January 2001 | archive-url = https://web.archive.org/web/20010126131700/http://home.earthlink.net/~nbrass1/4enigma.htm | url-status = dead }}
* {{citation | last = Pidgeon | first = Geoffrey | title = The Secret Wireless War: The Story of MI6 Communications 1939–1945 | publisher = UPSO Ltd |location=St Leonards-on-Sea, East Sussex | year = 2003 | isbn = 1-84375-252-2 | oclc = 56715513 }}
<!-- * [[Marian Rejewski|Rejewski, Marian]], wrote a number of papers on his 1932 break into Enigma and his subsequent work on the cipher, well into World War II, with his fellow mathematician-cryptologists, [[Jerzy Różycki]] and [[Henryk Zygalski]]. Most of Rejewski's papers appear in {{Harvnb|Kozaczuk|1984}} -->
* {{citation | last = Rejewski | first = Marian  | author-link = Marian Rejewski | year = 1984 | contribution = Summary of Our Methods for Reconstructing ENIGMA and Reconstructing Daily Keys, and of German Efforts to Frustrate Those Methods: Appendix C | editor-last = Kozaczuk | editor-first = Władysław | editor-link = Władysław Kozaczuk | editor2-last = Kasparek | editor2-first = Christopher | editor2-link = Christopher Kasparek | editor3-last = Frederick | editor3-first = MD | title = Enigma: How the German Machine Cipher Was Broken, and How It Was Read by the Allies in World War Two | edition = 2 | publisher = University Publications of America | pages = 241–45 | isbn = 978-0-89093-547-7}}
* {{cite book|first=Andrew|last=Roberts|title=The Storm of War: A New History of the Second World War|url=https://books.google.com/books?id=ZC-IBqQitdsC|year=2009|publisher=Penguin Books Limited|isbn=978-0-14-193886-8|page=501}}
* {{citation | last = Schlesinger | first = Arthur Jr. | author-link = Arthur Schlesinger Jr. | title = The Secrets War: The Office of Strategic Services in World War II | year = 1992 | publisher = Government Printing Office | location = Washington, DC | chapter = The London Operation: Recollections of a Historian | editor-first = George C. | editor-last = Chalou | isbn = 978-0-911333-91-6 }}
* {{cite book | last = Singh | first = Simon | author-link = Simon Singh | title = [[The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography]] | location = London | publisher = Fourth Estate | isbn = 1-85702-879-1 | year = 1999 }} <!-- This provides a description of the Enigma, other ciphers, and codes. -->
* {{cite book | last = Smith | first = Michael | author-link = Michael Smith (newspaper reporter) | title = Station X: The Codebreakers of Bletchley Park | edition = Pan Books | series = Pan Grand Strategy Series | year = 2007 | orig-year = 1998 | publisher = Pan MacMillan Ltd | location = London | isbn = 978-0-330-41929-1 }}
* {{cite book |last=Stephenson |first=Charles |year=2004 |title=The fortifications of Malta 1530–1945 |publisher=Osprey Publishing |location=Oxford, UK |isbn=1-84176-693-3 |series=Fortress No. 16}}
* {{citation |last=Taylor |first=Fredrick |year=2005 |title=Dresden:Tuesday 13 February 1945 |location=London |publisher=Bloomsbury |isbn=0-7475-7084-1 |page=[https://archive.org/details/unset0000unse_b8e7/page/202 202] |url=https://archive.org/details/unset0000unse_b8e7/page/202 }}
* {{Cite book |last=Tarrant |first=V.E. |year=1995 |title=The Red Orchestra |location=London |publisher=Cassel |isbn=0471134392}}
* {{Citation | last = Welchman | first = Gordon | author-link = Gordon Welchman | orig-year = 1982 | year = 1984 | title = The Hut Six story: Breaking the Enigma codes | location = Harmondsworth, England | publisher = Penguin Books | isbn = 0-14-00-5305-0 | url = https://archive.org/details/hutsixstorybreak00welc }} <!-- An early publication containing several misapprehensions that are corrected in an ''addendum'' in the 1997 edition. -->
* {{cite book | last = West | first = Nigel | author-link = Rupert Allason | title = GCHQ: The Secret Wireless War, 1900–86 | place = London | publisher = Weidenfeld and Nicolson | year = 1986 | isbn = 978-0-297-78717-4  }}
* {{cite book | last = Wilkinson | first = Patrick | year = 1993 | contribution = Italian naval ciphers | editor-last = Hinsley | editor-first = F.H. | editor-link = Harry Hinsley | editor2-last = Stripp | editor2-first = Alan | title = Codebreakers: The inside story of Bletchley Park | location = Oxford | publisher = Oxford University Press | isbn = 978-0-19-280132-6 }}
* {{cite book | last = Winterbotham | first = F. W. | author-link = F. W. Winterbotham | title = The Ultra Secret | location = New York | publisher = Harper & Row | year = 1974 | isbn = 0-06-014678-8 |edition =US }} <!-- The first published account of the previously secret wartime operation, concentrating  mainly on distribution of intelligence. It was written from memory and has been shown by subsequent authors, who had access to official records, to contain some inaccuracies. --> published in UK by Weidenfeld & Nicolson 0-297-76832-8
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