Publications...
"Enigma: Actions Involved in the ‘Double-Stepping’ of the Middle
Rotor"; Cryptologia, Vol. XXI (1), January 1997, pp. 47-50. [download: ©Cryptologia].
"Enigma Variations; An Extended Family of Machines" [with Geoff Sullivan & Frode Weierud]; Cryptologia, Vol. XXII (3), July 1998, pp. 211-229. [download: ©Cryptologia].
"M2114: A Naval Enigma"; Cryptologia, Vol. XXII (3), July 1998, pp. 230. [download: ©Cryptologia]
"G-312: An Abwehr Enigma"; Cryptologia, Vol.XXIV (1), January 2000, pp. 41-54.[download: ©Cryptologia].
"The Abwehr's Enigma G"; Enigma Symposium 2000, Hugh Skillen (Ed.).
"The Enigmas - and Other Recovered Artefacts - of U-85", Cryptologia, Vol.XXVII (2), April 2003, pp.97-110.
"The Enigmas of U-85", Enigma Symposium 2003, Hugh Skillen (Ed.).
"Bletchley Park - the American Garden Trail", The Link, Vol. 6, #4, National Cryptologic Museum Foundation.
"A KG-13 Arrives at NCM". The Link, Vol. 7, #1, National Cryptologic Museum Foundation [download].
"Bletchley Park - 2004 Enigma Reunion", The Link, Vol. 7, #2, National Cryptologic Museum Foundation.
"Remembering Britain's Peter Twinn", The Link, Vol. 7, #3, National Cryptologic Museum Foundation.
"The Russian M-125 FIALKA", The Link, Vol. 7, #4, National Cryptologic Museum Foundation.
"BPPO comes to the USA", The Link, Vol. 8, #2, National Cryptologic Museum Foundation.
"Victory Commemoration at Bletchley Park", The Link, Vol. 8, #2, National Cryptologic Museum Foundation.
"Review of Thirty Secret Years: A.G. Denniston's Work in Signals Intelligence: 1914-1944 by Robin Denniston", Cryptologia, Volume 31, Issue 4, 2007.
"The National Cryptologic Museum", Bletchley Park Times, Autumn 2007.
"Review of 'Herivelismus and the German Military Enigma' by John Herivel"', Cryptologia, Volume 33:1, pp 95-97, January 2009.
"Review of 'From Bletchley with Love' by Mavis Batey", Cryptologia, Volume 33:3, pp 274-275, July 2009.
"The National Cryptologic Museum", OSS Society Journal Volume 2:1, 2009.
"Bletchley Park 2009", USNCVA Cryptolog, Spring 2010.
"The Enigmas of U-85", Bletchley Park Times, Spring 2010.
"Review of 'Dilly - The Man Who Broke Enigmas' by Mavis Batey", ACA Cryptogram, May-June 2010.
"Review of 'Dilly - The Man Who Broke Enigmas' by Mavis Batey", USNCVA Cryptolog, Summer 2010.
"Review of 'Insider's Guide to 150 Spy Sites in London' by Mark Birdsall & Deborah Plisko", USNCVA Cryptolog, Fall 2010.
"Routemaster Redux", Bletchley Park Times, Autumn 2010.
"The David Kahn Collection at NSA’s National Cryptologic Museum", Cryptologia, 35:2, 110-113, April 2011.
"Review of 'Dilly - The Man Who Broke Enigmas' by Mavis Batey", Cryptologia, 35:2, 196-197, April 2011.
"Review of 'Neil Webster's Cribs for Victory' by Joss Pearson", The Cryptogram, Jan-Feb 2012.
"Review of 'Neil Webster's Cribs for Victory' by Joss Pearson", USNCVA Cryptolog, Winter 2012.
"Review of 'The Secrets of Station X' by Michael Smith", Cryptologia, 36:2, 164-166, April 2012.
"First Charlotte International Cryptologic Symposium and Exhibit", Cryptologia, 36:3, 290-294, July2012.
"Review of 'Hitler's Codebreakers' by John Jackson [Ed.]", The Cryptogram, Jan-Feb 2013.
"Review of 'Hitler's Codebreakers' by John Jackson [Ed.]", USNCVA Cryptolog, Spring 2013.
"Review of 'The Codebreakers of Station X' by Michael Smith", The Cryptogram, July-August 2013.
"Review of 'The Codebreakers of Station X' by Michael Smith", USNCVA Cryptolog, Summer 2013.
"Review of 'Hitler's Codebreakers' by John Jackson [Ed.]", Cryptologia, 37:4, 368-370, October 2013.
"Review of 'The History of Traffic Analysis' by Donald Borrmann et al", USNCVA Cryptolog, Fall 2013.
"Review of 'The History of Traffic Analysis' by Donald Borrmann et al", The Cryptogram, Jan-Feb 2014.
"Review of 'Gordon Welchman - Bletchley Park's Architect of Ultra Intelligence' by Joel Greenberg", USNCVA Cryptolog, Fall 2014.
"Mavis Batey - Codebreaker: An Appreciation and Reminiscence", USNCVA Cryptolog, Winter 2014.
"Review of 'Dönitz, U-boats, Convoys' by Jak P. Mallmann Showell", USNCVA Cryptolog, Winter 2014.
"Fox News Channel: D-Day Plus 70 - Secrets Revealed", 25 May 2014. Picture credits.
"Review of 'Dönitz, U-boats, Convoys' by Jak P. Mallmann Showell", Cryptologia, 38:3, 282-284, July 2014.
"Review of 'Gordon Welchman - Bletchley Park's Architect of Ultra Intelligence' by Joel Greenberg", The Cryptogram, Sept-Oct 2014.
"Review of 'Gordon Welchman - Bletchley Park's Architect of Ultra Intelligence' by Joel Greenberg", Cryptologia, 39:1, 101-103, January 2015.
"Adolf Hitler's Enigma", USNCVA Cryptolog, Fall 2014.
"Review of 'Gordon Welchman - Bletchley Park's Architect of Ultra Intelligence' by Joel Greenberg", USNCVA Cryptolog, Fall 2014.
"Mavis Batey: An Appreciation and a Remniscence", USNCVA Cryptolog, Winter 2014.
"Review of 'Dönitz, U-boats, Convoys' by Jak P. Mallmann Showell", USNCVA Cryptolog, Winter 2014.
"Adolf Hitler's Enigma", The Chronicle, Issue 7, Winter 2014..
"Review of Secret History: The Story of Cryptology by Craig Bauer", The Cryptogram, Nov-Dec 2014.
"Review of 'Solving Enigma's Secrets' by John Jackson [Ed.]", USNCVA Cryptolog, Summer2015.
"Review of 'Solving Enigma's Secrets' by John Jackson [Ed.]", The Cryptogram, Sept-Oct 2015.
"Review of 'The Secret World' by Hugh Trevor-Roper [Edward Harrison Ed.]", Cryptologia, 41:2, 184-185, March 2017.
"Review of 'The Secret World' by Hugh Trevor-Roper [Edward Harrison Ed.]", The Cryptogram, Mar-Apr 2016.
"Review of 'The Secret World' by Hugh Trevor-Roper [Edward Harrison Ed.]", USNCVA Cryptolog, Fall 2015.
"Review of 'Intercept', by Gordon Carera", USNCVA Cryptolog, USNCVA Cryptolog, Winter 2016'.
"Review of 'Intercept' by Gordon Carera", The Cryptogram, Jan-Feb 2016.
"Review of 'Prof - Alan Turing Decoded' by Sir Dermot Turing", Cryptologia, 40:6, 553-555, December 2016.
"Review of 'Prof - Alan Turing Decoded' by Sir Dermot Turing", USNCVA Cryptolog, Spring 2016.
"Review of 'Prof - Alan Turing Decoded' by Sir Dermot Turing", The Cryptogram, May-June 2016.
"Review of 'The Insider's Giude to 500 Spy Sites in London' by Mark Birdsall & Deborah Plisko'", The Cryptogram [TBP].
"Review of 'The Insider's Giude to 500 Spy Sites in London' by Mark Birdsall & Deborah Plisko", USNCVA Cryptolog, Spring 2016.
"Review of 'Solving Enigma's Secrets' by John Jackson [Ed.]", Cryptologia, 41:2, 186-189, March 2017.
"Letter From Fort Meade [series] ", regular contributor to Eye Spy Magazine: click here for a list of published articles.
Presentations...
"Enigma – an overview"; presented at the American Cryptogram
Association [ACA] - Northeastern MiniCon, Fort Meade, MD, 16-18 May 1997.
"The Lorenz SZ40/42 Cipher Attachment"; presented at the ACA’s Northeastern MiniCon, West Point, NY, 15-17 May 1998.
"The Abwehr Enigma and Other Computer Simulations"; presented at the ACA’s Northeastern MiniCon, Princeton, NJ, 21-23 May 1999.
"History or Hollywood"; TV presentation by A&E's The History Channel, April 2000 - Technical Advisor.
"Bletchley Park - Yesterday and Today"; presented at the ACA's Northeastern MiniCon, Gettysburg, PA, 5-7 May 2000.
"Recovery of the Stolen Abwehr Enigma ", interview with Jeremy Paxman on BBC-TV Newsnight, 17 October 2000.
"The Theft and Recovery of Enigma G-312", presented at the ACA's Northeastern MiniCon, Fort George G. Meade, MD, 4-6 May 2001.
"G-312 and the Bletchley Park Theft", presented at the Eighth Enigma Reunion, Bedford, UK, 7-10 September 2001.
"Codes, Ciphers and Enigma Variations", presented at United States Naval Academy, Annapolis, MD, 22 April 2002.
"U-85 and the Recovery of its Enigmas", presented at ACA's Northeastern Minicon, Sturbridge, MA, 3-5 May 2002.
"The Development of Enigma", presented as part of the Bletchley Park 2002-2003 Winter Lecture Series, 13 March 2003.
"Bletchley Park in 2003", presented at the ACA's Northeastern MiniCon, Lancaster, PA, May 2-4 2003.
"The Enigmas of U-85",
presented at the Tenth Enigma Reunion, Bedford, UK, 12-14 September 2003 and at the
Bletchley
Park Enigma Festival, 14 September 2003.
"Codes, Ciphers and the Enigma Machine", presented at the Clarence Dillon Memorial Library, Bedminster, NJ, 18 November 2003 and repeated on 18 February 2004.
"Enigma: Some Technological Comments", presented at the Central Intelligence Agency [CIA], Langley, VA, 4 March 2004.
"Codes, Ciphers and the Enigma Machine", presented at Drexel University, PA - sponsored by IEEE - 27 April 2004.
"A Report on Bletchley Park in 2003", presented at the ACA's Northeastern MiniCon, Lake George, NY, 30 April-2 May, 2004.
"Codes, Ciphers and the Enigma Machine", presented at the Randolph Library, NJ, 9 June 2004.
"Codes, Ciphers and the Enigma Machine", presented at Drexel University, PA - sponsored by IEEE - 19 April 2005.
"TEA - The Electronic Alveary", presented at the ACA's Northeastern MiniCon, Philadelphia, PA, 20-22 May, 2005.
"An Enigma Replica", presented at the National Cryptologic Museum Foundation, Fort Meade, MD, 17 September 2008.
"Code Breakers", National Geographic TV Special, first broadcast in USA on 1 March 2009 [earlier in the UK].
"The Enigmas of U-85 - Redux", presented at the Enigma Festival and Reunion, Bletchley Park, UK, 6 September 2009.
"The Enigmas of U-85", presented at the First Charlotte Enigma Conference, Charlotte NC, USA, 22 March 2012.
"Codes, Ciphers and the Enigma Machine", to be presented at the Gloucester County Library, NJ [2012].
"Bletchley Park in 2003: Redux", presented at the ACA's Northeastern MiniCon, Lake George, NY, 4-6 May 2012.
"Fox News Reporting: D-Day plus 70", picture credits - Fox News Channel, 25 May 2014.
Other...
Appointed 'official spokesman' by the Bletchley Park Trust in July 2001.
Member of the Editorial Board of Cryptologia since January 2006.
Associate Editor of Eye Spy magazine since July 2006.
Session chairman: NSA/CCH Crypto-History Symposium, 2009.
Technical Advisor for TV "White Collar" episode based on Enigma: 2010.
Session chairman: NSA/CCH Crypto-History Symposium, 2013.
Session chairman: NSA/CCH Crypto-History Symposium, 2015.
updated 07 March 2017