| Date | Section | Page | Update |
| 03/27/2016 | Mechanical | History |
|
| 05/16/2015 | The Age of the Polymaths | History |
Translation to
Bulgarian
made by Stoil Dragomirov |
| 05/09/2015 | Microcomputer Invention | Collectors and History |
French translation by Silvia Moraru |
| 04/19/2015 | Nixdorf Calculators 1 | Collectors and History |
French translation by Anna Chekovsky |
| 03/21/2015 | Wang Calculators | Collectors and History |
French translation by Mary Orban |
| 03/21/2015 | Nixdorf Calculators 2 | Collectors and History |
French translation by Vicky Rotarova |
| 11/16/2014 | Nixdorf Calculators 1 | Collectors and History |
French translation by Anna Chekovsky |
| 04/27/2014 | Mechanical/Electr | Collectors and History |
Jim Falk - Things that Count: the rise and fall of calculators |
| 10/14/2012 | Mechanical | History | Mechanical Calculators translation to Russian - Mario Pozner |
| 06/06/2012 | Mechanical | History | Yves Serra - Pascaline Website |
| 03/11/2012 | Electr | Collectors | Shinichiro Osaki - Dentaku Museum |
| HAPPY NEW YEAR! | |||
| 07/15/2011 | Mech | Collectors | Updated information of Friedrich Diestelkamp |
| 01/27/2011 | Mech | Collectors | Updated information of Andre Devaux |
| HAPPY NEW YEAR! | |||
| 11/05/2010 | Mechanical | History | An article about Chinese Wenhua (Culture) mechanical calculators by Wj Wang |
| 10/30/2010 | Mechanical | Collectors | Added Wj Wang to the Collectors Gallery |
| 09/24/2010 | Mechanical | Collectors | Added Michael and Dianne Hancock to the Collectors Gallery |
| 09/14/2010 | Mechanical | Resources | Updated Michael Hancock Info |
| 06/27/2010 | Electr | Collectors | Lamberto Guerrero - Old Radios and Calculators |
| 08/28/2009 | Electr | Collectors | Rohit Menon - Old Texas Instruments Calculators |
| 04/20/2008 | Electr | Articles | Stan Mazor's Chateau - Youtube Video |
| 01/18/2008 | Mech | Collectors | Gaby Redin and Andrea Duranti - Collection of Vintage Calculators |
| HAPPY NEW YEAR! | |||
| 11/30/2007 | Mech | Collectors | Herbert Scheemann - Rechen Maschinen Illustrated |
| 11/21/2007 | Mech | Books | MONROE 6N - Parts Catalog 1959 - Courtesy of Ite Weide |
| 09/21/2007 | Mech | Album | Greg Lambousy - Burkhardt Arithmometer. |
| 05/06/2007 | Electr | History | The Story of Mister Rocket - Serge Devidts. |
| 05/05/2007 | Electr | Collectors | Noël Jouenne (France) |
| 03/16/2007 | Home and Online | Home and Javascript | Kalid Azad - InstaCalc |
| 02/14/2007 | Electr | Collectors | David Hicks - Museum of HP Calculators |
| 02/08/2007 | Mech | Collectors | David Riches - Mathematical Instruments Website. |
| 01/07/2007 | Home | Books | The Calculating Machines - Online |
| 01/07/2007 | Mech | Collectors | Herbert Schneemann (Germany) |
| 01/01/2007 | Home | Home page | Using keyboard style on selection menu. |
| HAPPY NEW YEAR! | |||
| 12/02/2006 | Troncets | Album | Added items from David M Riches Collection |
| 12/01/2006 | Electr | Articles | Microprocessor History - Foundations in Glenrothes - Scotland - Jim McGonigal |
| 10/27/2006 | Modern | Resources | HP41 Archives - Warren Furlow |
| 10/27/2006 | Modern | Resources | Manual for Monroe 2125 - Courtesy of Ken Welter |
| 09/29/2006 | Mech | Collectors | David M Riches Collection |
| 09/05/2006 | Troncets | Album | Rychlopoctar Addiator from David M Riches Collection |
| 07/29/2006 | Troncets | Album | Addiator pictures from David M Riches Collection |
| 05/29/2006 | Electr | Articles | The MCM/70 Microcomputer - Zbigniew Stachniak. |
| 05/29/2006 | Electr | Museums | The York University Computer Museum - YUCoM. |
| 05/28/2006 | Mech | Articles | Making the Arithmometer Count - Stephen Johnston |
| 05/27/2006 | Home | Home page | Redesign of the home page and menu options. |
| 05/19/2006 | Home | Home page | Link to Google Calculator - X-Number Keyboard Interface |
| 05/19/2006 | Mech | Album | Original Odhner 4241 - Vladimir Baykov - Russia. |
| 05/19/2006 | Mech | Collectors | Kevin Odhner _ Odhner Memorial Site |
| 05/19/2006 | Electr | Album | MP-1 Chip |
| 02/05/2006 | Mech | Collectors | Nathan Zeldes (Israel) - Mechanical Calculators Collection. |
| 12/10/2005 | Electr | Collectors | Emil Dudek (England) - Vintage Technology |
| 12/02/2005 | Mech | Collectors | Clive Maxfield (USA) - DIYalculator |
| 12/02/2005 | Mech | Album | Enigma Decoding Machine - Clive Maxfield |
| 12/02/2005 | Troncets | Album | OMEGA - Pocket Adding Machine - Clive Maxfield |
| 08/13/2005 | Mech/Electr | History | The History of Calculators and Computers - Clive Maxfield |
| 07/26/2005 | Mech/Electr | Museums | Computer History Museum - Mountain View, CA Arithmeum - Bonn. |
| 06/11/2005 | Mech/Electr | Collectors | Andrew Davie - Updated information. |
| 06/10/2005 | Mech | History | Difference of Opinion - Escaping from the footnotes of history - Felix Grant and Ray Girvan |
| 06/03/2005 | Mech | Collectors | Magnus C. Buehrmann (Germany) - Vintage and modern cash registers |
| 06/03/2005 | Mech/Electr | Collectors | Josep Balsach (Spain)- De la Mano al Cálculo Electrónico |
| 06/03/2005 | Mech | Collectors | Harold Schmid (Germany) - Facit Calculators |
| 05/28/2005 | Mech | Collectors | Mark Glusker (USA)- Mechanical Calculations |
| 04/30/2005 | Mech | Collectors | Andre Devaux (France) |
| 02/13/2005 | Mech | Resources | ReLex |
| 02/12/2005 | Mech | Collectors | Valéry Monnier (France) - Arithmometre. |
| 02/12/2005 | Troncets | History | History of the Magic Brain Calculator - John D. Huey |
| 08/02/2004 | Online | Other | Dynamic Drive - Dynamic HTML Calculator. |
| 07/30/2004 | Mech/Electr | Collectors | Nico Baaijens (Holland) - Old Calculators - My Collection. |
| 07/09/2004 | Electr | History | Heinz Nixdorf and the Nixdorf Computer AG - Margret Amedick and Ulf Hashagen |
| 07/05/2003 | Troncets | Album | Posted comments on "Calculator" Troncet model. |
| 07/04/2004 | All | All | Passed all the pages to a new server from dotpoint.com to xnumber.com |
| 05/18/2004 | Mech | History | Biography of a Machine - Brooke Boering (aka -Vagabondo) |
| 05/04/2004 | Mech | Collectors | Freddy Haeghens - Belgium |
| 03/11/2004 | Electr | Collectors | Serge Devidts (Belgium) - BE CALC |
| 02/20/2004 | Mech | Collectors | Lars Lind Nilsson - Denmark |
| 02/16/2004 | Mech | Facit Pages | Lars Lind Nilsson - Facit Model S (1936). |
| 02/14/2004 | Electr | Collectors | Simon and Amanda Southwell (UK) |
| 02/13/2004 | Online | JavaScript | Simon Southwell and Hugh Steers - Anita, Adler and Triumph Calcs. |
| 02/10/2004 | Mech/Electr | Collectors | Ugo Mainieri (Milano - Italy) |
| 02/09/2004 | Mech/Electr | Collectors | Torbjörn Olsson (Sweden) |
| 02/04/2004 | Mech | History | Interview with Frank Stephen Baldwin. |
| 01/30/2004 | Online | Flash | Jan Meyer - Curta Simulator |
| 01/30/2004 | Mech | Album | Kevin Brown - Alpina 1961 |
| 01/19/2004 | Mech | Album | Robert Poor - Monroe Electrical 1922 |
| 01/19/2004 | Electr | Album | William Jones - Qualitron |
| 10/15/2003 | Mech | Collectors | Nicholas Bodley - USA. |
| 10/15/2003 | Mech | Collectors | Prof. Rainer Bischoff - Denmark |
| 11/08/2003 | Mech | Misc | Notes on Burroughs page updated. |
| 10/11/2003 | Mech | History | James Redin - First Mechanical Binary Computer - History Part III. |
| 10/03/2003 | Mech/Electr | Collectors | Philippe Marmy - Computissimo. |
| 09/17/2003 | Electr | History | Recollections of the Walther Company's Ventures into Electronics - Ray McKay |
| 09/16/2003 | Mech/Electr | Museums | Museu das Calculadoras - Brazil |
| 09/16/2003 | Mech/Electr | Collectors | Paulo Boselli - Brazil |
| 08/24/2003 | Mech | Collectors | Noel Jouenne - France |
| 08/06/2003 | Troncets | Album | Excelsior - Robert K. Otnes |
| 08/05/2003 | Mech | Collectors | Robert K. Otnes - Mechanical Calculators Collector |
| 08/01/2003 | Mech | Album | Monarch - Donald Stei |
| 07/30/2003 | Troncets | Album | Kalkometer - Thomas Mumper |
| 07/21/2003 | Mech | Album | ADDO Calculator - Richard Weston |
| 07/20/2003 | Vintage | Billboard | Donald Stai - Unknown Calculator |
| 07/20/2003 | Mech | Collectors | Walter Szrek - Calculator's Pages |
| 07/06/2003 | Mech | Album | Remington Rand Calculator - Ken Hamilton |
| 07/04/2003 | Troncets | Album | MBC Pocket Calculator - Stacie Robertson. |
| 05/18/2003 | Online | Other | Virtual Calc98 - www.calculator.org |
| 05/17/2003 | Online | Other | Blaine Hilton - WebCalc |
| 03/18/2003 | Mech | History | Jean Marguin - UNE
HISTOIRE DU CALCUL ARTIFICIEL ET DE SES CONCEPTS |
| 02/17/2003 | Mech | History | James Redin - Antikythera Calculator - History Part I |
| 02/17/2003 | Online | Java | Gerhard Wenzel - Bowmar Calculator |
| 02/17/2003 | Online | Javascript | Bryan Gamble - BG-78 Calculator |
| 02/16/2003 | Mech | History | Évolution des machines ŕ calculer - Alexandre Faribault |
| 02/14/2003 | Electr | Collectors | Evrard Gerard - France |
| 01/19/2003 | Electr/Mech | Collectors | Daniel Sancho - Teclas.org |
| 01/19/2003 | Electr | Collectors | Emil Dudek - Vintage Technology |
| 01/19/2003 | Electr | Album | Litronix 1102 - David Smith |
| 12/09/2002 | Vintage | Forum | Reset entries. |
| 12/08/2002 | Electr Online |
Album | Datamath Windows Calculator - Joerg Woerner. |
| 07/11/2002 | Mech | Collectors | Dick Rose - Vintage Instruments. |
| 06/28/2002 | Mech | Album | Mechanical Accountant 1910 - Jay M. Goldman. |
| 05/16/2002 | Troncets | Album | Pro Calculo - Beth Stone. |
| 05/10/2002 | Online | Flash | Calculator.com - Fractions & Scientific. |
| 05/10/2002 | Online | Flash | Steve Andrews - Numeric Calculator |
| 05/09/2002 | Electr | Collectors | Malcolm - My Calculators |
| 05/08/2001 | Mech | Album | Facit Original - Serial # 106! - Jay M. Goldman. |
| 04/17/2002 | Mech | Collectors | Giovanni Breda - Italy |
| 04/05/2002 | Troncets | Album | Seidel & Naumann - Jay M. Goldman. |
| 03/15/2002 | Electr | History | The Story of the Datamath Calculator - Joerg Woerner. |
| 03/15/2002 | Electr | Album | Corvus 0310 - David Smith |
| 03/15/2002 | Mech | Collectors | Erhard Anthes - Germany |
| 03/15/2002 | Mech | History | The FACIT Pages - Facit 1051 Prof. Erhard Anthes |
| 02/17/2002 | Electr | Collectors | Maike Sebastian - USA |
| 02/10/2002 | Electr | Resources | Mike Sebastian - Technical Information |
| 02/10/2002 | Electr | Collectors | Ernst Mulder - Sweden |
| 02/10/2002 | Mech | Album | Tim Bergin - Brunsviga, American, Victor, Wales. |
| 01/09/2002 | Mech Electr |
Museums | American University Computer History Museum |
| 01/09/2002 | Mech | Collectors | Tim Bergin - USA |
| 12/05/2001 | Electr | Album | Keystone 2050 - Dwayne Schild |
| 12/04/2001 | Mech | Album | Precisa - Everest - Freddy Haeghens. |
| 11/26/2001 | Electr | History | Intel's Accidental Revolution - Michael Kanellos. |
| 11/06/2001 | Electr | Album | Casio AS-80 - Mike Shortville. |
| 11/05/2001 | Mech | Album | Burkhardt Arithmometer & Scribola - Jay M. Goldman. |
| 10/20/2001 | Online | JavaScript | Educated Monkey - Reinhard Atzbach. |
| 10/20/2001 | Mech | Album | Numeria Comptometer - David Arthur. |
| 10/20/2001 | Mech | History | History of Mechanical Calculators - Part III. Added a section for Adix, Diera and Kuli machines. |
| 10/20/2001 | Troncets | Album | Omega Rechner - Freddy Haeghens. |
| 10/20/2001 | Mech | Album | Adix, Kuli, Demos II - Freddy Haeghens. |
| 10/13/2001 | Mech | Museums | Retro beep |
| 10/13/2001 | Mech | Album | Schickard's Replica - Freddy Haeghens. |
| 10/07/2001 | Mech/Electr | Resources | Google Page of Calculators. |
| 10/07/2001 | Mech | Collectors | Keith Smillie - Canada |
| 10/07/2001 | Electr | Collectors | Matthias Wehrli. Switzerland |
| 10/07/2001 | Mech | Troncets | Locke & Educated Monkey - Art Rosen. |
| 10/07/2001 | Mech | Album | Archimedes - Art Rosen. |
| 09/28/2001 | Mech | Album | American Arithmometer - Art Rosen. |
| 09/23/2001 | Mech | Billboard | Burroughs - Walter Coston |
| 09/05/2001 | Mech | Collectors | Jay M. Goldman - Office Collectibles. |
| 09/05/2001 | Mech | Album | Austria, Liliput, XxX, Marchant - Jay M. Goldman. |
| 08/31/2001 | Mech | Resources Clips |
Notes on the History of FACIT - Nils Bongue |
| 07/30/2001 | Mech | Museums | Computer History Exhibits - Stanford University. |
| 07/06/2001 | Mech | Album | ASTRA - Tullio Parravicini |
| 07/06/2001 | Mech | Collectors | Tullio Parravicini - Italy |
| 07/06/2001 | Electr | Album | Amelia Sci LED Calc - David May |
| 07/06/2001 | Electr | Album | TI-1200 and Bowmar 901B - David Smith |
| 06/15/2001 | Mech | Collectors | Giuseppe Caltagirone - Italy |
| 06/15/2001 | Mech | Resources | Updated Dick Rose's mechanic calculators listing. |
| 05/20/2001 | On-Line | Calcs | Terrence Ma - Flash Calculator |
| 05/19/2001 | On-Line | Calcs | Steve Dulaney Windows Calculator |
| 05/19/2001 | On-Line | Calcs | Link to javascriptsource.com |
| 05/18/2001 | Electr | Collectors | David Gowing - Stellatron |
| 05/12/2001 | Electr | Collectors | Chris Owen - Planet Sinclair |
| 05/11/2001 | Electr | Resources Articles |
Sharp LCD Calculators: 1973 – early 1980s - Larry Gilbert. |
| 04/27/2001 | Mech | Album | Odhner - LUSID - Eusebio Huélamo |
| 04/2522001 | Mech | History | The FACIT Pages - Facit CE1006 Christofer Nöring |
| 04/06/2001 | Troncets | Album | Et Ultra Washington - Leonel Yussim |
| 04/06/2001 | Mech | Billboard | Et Ultra Washington - Leonel Yussim |
| 04/06/2001 | Electr | Collectors | Updated Bruce Rogers links. |
| 04/06/2001 | Mech | Album | Napier Bones - David Bauman. |
| 04/01/2001 | Mech | Forum | Reset entries. |
| 03/10/2001 | Mech | Collectors | Dr. Joern Luetjens - Slide rules, abacuses and addiators museum |
| 03/02/2001 | Electr | Collectors | Serge Devidts - Vintage Electronic Calculators |
| 03/02/2001 | Electr | History | Recollections of the Walther Company's Venture into Electronics - Ray Mackay |
| 03/01/2001 | Electr | History | Moore's "Promise" and Early Microcomputer Developments (video) - Stanley Mazor |
| 02/25/2001 | Mech | History | The FACIT Pages - Facit CE1-13 Christofer Nöring |
| 02/23/2001 | Electr | Album | Shima's 4004 Towel, Intel 8008 & 8080 - Stanley Mazor |
| 02/23/2001 | Mech | Album | Curta I - Clive Faulks |
| 02/19/2001 | Mech | Collectors | Wolf-G. Bluemich - Germany |
| 02/19/2001 | Mech/Electr | Classifieds | Artifice - Clive Faulks |
| 02/13/2001 | Mech | BillBoard | Arithmometer - Alfredo Chaves |
| 01/28/2001 | Mech | History | The FACIT Pages - Facit Standard. Jay Goldman |
| 01/27/2001 | Mech | Album | Calcumeter - Vic Bramlett |
| 01/24//2001 | Troncets | Album | Siedel&Naumann update - Andries de Man |
| 12/16/2000 | Mech | Collectors | Reinhard Atzbach - Germany |
| 12/15/2000 | Mech | Collectors | Eusebio Huélamo - Spain |
| 12/08/2000 | Mech | History | Recuerdos
del Cálculo Mecánico Eusebio Huélamo |
| 11/23/2000 | Troncets | Misc | Magic Brain Calculator Instructions |
| 11/18/2000 | Troncets | Album | W Calculator - Frank Graichen |
| 11/12/2000 | Mech | Album | Contex Notes - John Blackler. |
| 11/11/2000 | Mech | History | History of Mechanical Calculators - Part II. Added a section for Thomas Fowler Ternary Machine. |
| 11/11/2000 | Mech | Album | Thomas Fowler's Calculator |
| 11/10/2000 | Mech | Album | Braun & Vayringe Calculator |
| 11/10/2000 | Electr/Mech | Museums | Deutsches Museum |
| 11/09/2000 | Mech | History | The FACIT Pages - Facit Standard - K. Kadokura |
| 11/05/2000 | Electr | History | The History of the Microcomputer - Invention and Evolution - Stanley Mazor. |
| 10/29/2000 | Electr | Collectors | David May - Classic Collectors World |
| 10/14/2000 | Mech | History | Updated Facit's info in the Facit Page. |
| 10/08/2000 | Electr | Collectors | Joerg Woerner's TI Museum. |
| 10/06/2000 | Mech | History | History of FACIT Calculators by Christofer Nöring |
| 10/06/2000 | Mech | History | Updated Facit's info in the History of Mechanical Calculators - Part II. |
| 09/16/2000 | Electr | Album | Joerg Woerner's TI Collection. |
| 08/20/2000 | Troncets | Album | Totalisateur Troncet from EBay |
| 08/20/2000 | Troncets | Album | C.H. Webb Adder from EBay |
| 08/19/2000 | Books | Office Collectibles : 100 Years of Business Technology | |
| 08/19/2000 | Electr/Mech | Museums | Mathematisches Maschinenmuseum |
| 08/19/2000 | Electr | Collectors | Nigel Tout - Vintage Calculators |
| 08/01/2000 | Electr | Album | TI-1025, NSC750, Royal, Sears 82- David Smith |
| 07/23/2000 | Electr | Album | Mathematician - David Smith |
| 07/23/2000 | Electr | Album | TI-2550 - David Smith |
| 07/16/2000 | X-Number | all | Updated missing links.. Please report any one left. Thanks! |
| 07/16/2000 | Electronic | Collectors | La Colección de Calculadoras de Xosé |
| 07/15/2000 | Electronic | Classifieds | Antiqibles.com Antiques & Collectibles Internet Directory |
| 07/14/2000 | Mech | Troncets | Jim Cerny's Addiators. |
| 06/24/2000 | Mech | Collectors | Nigel Tout |
| 06/23/2000 | Mech | History | Updated Comptometer info in the History of Mechanical Calculators - Part III. |
| 06/09/2000 | On-Line | Calcs | Updated Links. |
| 05/07/2000 | Patent | Foreword | Updated patent information. |
| 04/30/2000 | Mech | Collectors | Friederich Diestelkamp. |
| 04/22/2000 | Mech | History | Chronology of the History of Japanese Mechanical Calculators - K. Kadokura. |
| 04/17/2000 | Mech | Collectors | Katsunory Kadokura. |
| 04/15/2000 | Mech | History | The FACIT Pages - Facit E, EK, NE, NLX - K. Kadokura |
| 04/14/2000 | Mech | History | History of Japanese Mechanical Calculators - K. Kadokura. |
| 04/06/2000 | Mech | History | Non-Decimal Calculators - Friederich Diestelkamp. |
| 03/12/2000 | Mech | History | The FACIT Pages - Facit EA - Christofer Nöring |
| 01/25/2000 | Electr | Museums | Gerhard Wenzel's Museum of Pocket Calculating Devices |
| 01/23/2000 | Electr/Mech | Collectors | Gerhard Wenzel's Museum of Pocket Calculating Devices |
| 01/22/2000 | Mech | Album | Mercedes Euklid - Leslie Zysman |
| 01/20/2000 | Electr | BillBoard | Galactica request - Gary Cannavo |
| 01/11/2000 | Electr | Album | Montgomery Ward P8M - David Smith |
| 01/11/2000 | Mech | Collectors | Christofer Nöring - Sweden. |
| 01/10/2000 | Electr | Album | NSC 850 & Keystone 88 - David Smith |
| 01/07/2000 | Electr | Album | Commodore GL986R -David Smith |
| 01/07/2000 | Electr | Album | Sharp EL-1105 -David Smith |
| 01/01//2000 | Mech | History | The FACIT Pages - Facit collection from Christofer Nöring |
| 11/21/1999 | Electr | Album | Updated links to HP Calcs - MOHPC |
| 11/05/1999 | Electr | Collectors | Pepe Tozzo - RetroKit |
| 08/29/1999 | Vintage | Billboard | Ensign Calculator - Robert Otnes, PhD |
| 08/29/1999 | Mech | Album | Ensign Calculator - Robert Otnes, PhD |
| 08/21/1999 | Mech | Resources | Clips - Notes on Burroughs Machines |
| 08/21/1999 | Mech | Album | Odhner Machine - Vladimir Baykov. |
| 08/21/1999 | Electr | Album | TI-SR11 -David Smith |
| 07/09/1999 | Mech | Album | Contex Sterling & 1960 model - John Wolff. |
| 06/22/1999 | Electr | Album | TI-1255 - Cleo McCall |
| 06/21/1999 | Electr | Album | TI-1250 and SR-51A - David Smith |
| 05/29/1999 | Books | Books | Amazon.com Calculators Book Page |
| 05/29/1999 | Mech | Album | Comptometer WM - War Model - Ray MacKay. |
| 05/24/1999 | Mech | Album | Austin Adding Machine - Michael Levosky |
| 05/22/1999 | Electr | Album | Commodore SR1800 - David Smith |
| 05/21/1999 | Mech | Resources | [Articles] Comptometer Photos - Internals - Ray MacKay |
| 05/03/1999 | Electr | Album | Sharp EL-801 - David Smith |
| 04/23/1999 | Mech | Troncets | Efficence & Da Crosses - Christophe Mery |
| 04/23/1999 | Mech | Album | Comptometer Model E - Kevin Odhner |
| 04/16/1999 | Electr | Collectors | Eric Toonen - Eric's Pocket Calculator collection |
| 04/10/1999 | Mech | Troncets | Master - Andries de Man. |
| 04/02/1999 | Mech | Collectors | Brooke W. Boering (aka Vagabondo) |
| 04/02/1999 | Mech | Album | Comptometer Models - Brooke W. Boering |
| 04/02/1999 | Mech | Album | Baldwin - 1902 Model - Andries de Man |
| 04/02/1999 | Vintage | Cover | Link to The Hersh Web Site Observer |
| 03/24/1999 | Modern | Manufact | Monroe Systems for Business |
| 03/06/1999 | Mech | Resources | IFHB Internationales Forum Historische Bürowelt e. V. |
| 02/27/1999 | Electr | Album | Nixdorf LK-3000 - Pete Owen |
| 02/26/1999 | Mech | History | [Part II] Added a paragraph on Felix Calculators |
| 02/26/1999 | Mech | Album | Felix Calculator - Sovietski Collection |
| 02/26/1999 | Mech | Album | Monroe K with Electrical Drive - Cindy Stringer |
| 02/19/1999 | Mech | Resources | [Articles] MADAS Photos - Internals - Ray MacKay |
| 02/14/1999 | Mech | Troncets | Arithmographe Troncet - Eusebio Huélamo |
| 02/06/1999 | Electr | History | Uncle Sinclair - Dr. Anoop Sahal |
| 02/06/1999 | Electr | Album | Sinclair Collection - Dr. Anoop Sahal |
| 02/05/1999 | Mech | Album | Ray Subtracto-Adder - Andy Kaylor |
| 02/05/1999 | Mech | Resources | CURTA Repairs - Jack Christensen |
| 02/05/1999 | Mech | Resources | MADAS CD-ROM - Ray Mackay |
| 02/05/1999 | Electr | Album | Garrett 2020 - Thayer Gignoux |
| 01/30/1999 | Mech | Billboard | Eusebio Huélamo MADAS offer. |
| 12/12/1998 | Cover | Home | Included new design of calculator. |
| 12/12/1998 | Mech | History | The FACIT Pages - Facit C1-16 - Art Rosen |
| 12/08/1998 | Mech | Troncets | S&L Chain Adder - Geoff Bowles |
| 12/05/1998 | Mech | Album | Monroe MA7 and Monroe-Matic - John Wolff |
| 12/05/1998 | Mech | Album | Piano Arithmometer - Bob Otnes |
| 12/04/1998 | Mech | History | Link to Colmar Patents - Andries de Man and Bob Otnes. |
| 11/15/1998 | Mech | Resources | [Clips] The Colors of Comptometers. |
| 11/15/1998 | Troncets | Album | Exactus & Produx - Dave May's Collection |
| 11/15/1998 | Electr | Collectors | Dave May - DJ's Collectors Trail |
| 11/13/1998 | Electr | History | Updated Timeline with Soviet Calcs |
| 11/08/1998 | Electr | Resources | Link to Alex Knight Desktop Calculators Directory. |
| 11/08/1998 | Electr | Resources | [Clips] 15-keys - Notes on Key Reduction Examples. |
| 11/06/1998 | Mech | Resources | Curta T-Shirt and link to CALCLIST Archives. |
| 10/23/1998 | Mech | Album | Russian Abacus (Schoty) - Timo Leipala & Sergei Frolov. |
| 10/18/1998 | Electr | History | History of Soviet Calculators - Sergei Frolov. |
| 09/09/1998 | Mech | History | The FACIT Pages - Facit collection from Timo Leipala |
| 08/25/1998 | Mech | History | The FACIT Pages - Facit NTK - Art Rosen |
| 07/26/1998 | Mech | History | The FACIT Pages. |
| 06/30/1998 | Mech | Resources | [Clips] PREDOM 3201 - Vladimir Todorov. |
| 06/25/1998 | Electr | Resources | Added comments of Nicholas Bodley and Mark Glusker to Alex Knight's article. |
| 06/24/1998 | Electr | Resources | [Articles] Basic Troubleshooting Tips for Old Calculators - Alex Knight |
| 06/21/1998 | Electr | Album | Unisonic 737 - Bill Wood |
| 06/16/1998 | Mech | Resources | [Clips] Pronounciation of FACIT? |
| 06/02/1998 | Mech | Album | Bollee's Machine - Patent Link - Andries de Man |
| 06/02/1998 | Mech | Troncets | Webb's Adder - Patent Link - Andries de Man |
| 06/02/1998 | Mech | Album | Ramon de Verea's Machine - Andries de Man |
| 06/01/1998 | Mech | Resources | [Clips] Mechanical Cashiers |
| 05/26/1998 | Cover | Home | Upgraded X# Calc to support Netscape Communicator 4.0 |
| 05/10/1998 | Patent | X# Calc | Installed Extended version of X-Number Calculator |
| 05/09/1998 | Cover | Home | Installed Std. version of the X-Number Calculator |
| 05/05/1998 | Mech | Album | Stephenson Adding Machine - Darryl Rehr |
| 05/04/1998 | Mech | Album | Todd Visible Adding Machine - Timo Leipala |
| 05/03/1998 | Mech | Resources | [Clips] Numeria Calculator - Updates |
| 04/27/1998 | Mech | Resources | [Clips] Numeria Calculator - Peter Johnson |
| 04/19/1998 | Mech | Resources | Neal McChristy's Yesterday's Office |
| 04/19/1998 | Mech | Collectors | Jay Respler |
| 04/16/1998 | Vintage | Archival | Added Forum Archivals Aug/97 thru Apr/98 |
| 04/09/1998 | Mech | Troncets | Troncet's Arithmographe - Christophe Mery |
| 04/09/1998 | Mech | Collectors | Christophe Mery - France |
| 04/02/1998 | Electr | History | "Innovation: The World's first MPU 4004" Busicom Corp. |
| 03/29/1998 | Electr | Collectors | Moises Vilalta - Tinytron, Spain. |
| 03/29/1998 | Mech | Resources | [Clips] Updated Martin's Book notes |
| 03/29/1998 | Vintage | Main | Added Web Ring Menu (Andrew Davie) |
| 03/21/1998 | Vintage | Main | Introduced new service: BILLBOARD |
| 03/21/1998 | Mech | Album | Pangborn - Darryl Rehr |
| 03/20/1998 | Mech | Album | Brunsvigas A and B - Eusebio Huelamo & Gerold Beckers |
| 03/20/1998 | Electr | Collectors | Mark Greenia |
| 03/20/1998 | Electr | History | "Heinz Nixdorf" - Mark Greenia, Lexicon Services |
| 03/19/1998 | Electr | Album | Anita C/VIII and Anita MK12 - Frank Boehm |
| 03/17/1998 | Mech | Resources | Link to "Yesterday's Office." |
| 03/15/1998 | Mech | Album | Millionaire Calculator photos - Bob Stadsholt |
| 03/15/1998 | Mech | Resources | The Millionaire Calculator - Jim McDermaid |
| 03/12/1998 | Electr | History | Agreement between Intel and NCM (Busicom) |
| 03/09/1998 | Mech | Album | Esacta - Carlo Torchio, Italy. |
| 03/08/1998 | Electr | News | Link to article on Curta Calculators |
| 03/06/1998 | Electr | Collectors | Douglas Jones and Andrew Davie |
| 03/06/1998 | Mech | Resources | [Articles] Marchant:
Some Preliminary Remarks - N.Bodley Also, link to How to build an HP-35 Battery Pack. |
| 03/06/1998 | Electr | Resources | [Clips] Casio Date Functions |
| 03/05/1998 | Electr/Mech | Resources | Link to Lexikon's Encyclopedia of Computer History page |
| 03/04/1998 | Mech | Resources | Associazione Italiana Collezionisti Macchine per Scrivere, da Calcolo e da Ufficio in Genere, d'Epoca |
| 03/03/1998 | Electr | Collectors | Dan Bellander, and Bill Wood. |
| 03/02/1998 | Mech | Album | Internals Millionaire and Monroe Model G. |
| 02/23/1998 | Troncets | Album | Kummer Slide Adder - Timo Leipala |
| 02/21/1998 | Mech | Collectors | Jean Marguin |
| 02/21/1998 | Mech | Album | Hahn's Machine - Jean Marguin |
| 02/14/1998 | Mech | Album | Saxonia - Dave Humphrey |
| 02/14/1998 | Mech | Resources | [Clips] Ernst Martin - The Calculating Machines |
| 02/12/1998 | Electr | History | Link to: "Creativity and Contribution" by Tadao Kashio. |
| 02/10/1998 | Mech | Album | Rapid Calculator (1918) - Anthony |
| 02/09/1998 | Mech | History | Burroughs - History - Michael Hancock |
| 02/08/1998 | Mech | Album | Addiator - Moises Vilalta |
| 02/07/1998 | Electr | Album | Calcu-Pen - Don Digalbo |
| 02/07/1998 | Mech | Album | Busicom HL-21 - John Wolff |
| 02/07/1998 | Troncets | Album | Fractomator - John Wolff |
| 02/07/1998 | Electr | Resources | [Clips] Olivetti Logos 250 |
| 02/06/1998 | Mech | Resources | [Clips] MADIX calculator. |
| 02/06/1998 | Electr | Resources | [Clips] Just Curious - Who is Who? |
| 02/03/1998 | Mech | Album | Original Odhner - Timo Leipala |
| 02/02/1998 | Mech | Album | Dalton and Millionaire - The Olde Office and E. Huelamo |
| 02/02/1998 | Mech | Classifieds | The Olde Office |
| 01/29/1998 | Troncets | Album | Universal Adding Machine - Darryl Rehr |
| 01/29/1998 | Mech | Album | Marchants, Plus, Contex - E. Huelamo and Timo Leipala. |
| 01/29/1998 | Mech | Collectors | Ernie Jorgenson and Darryl Rehr. |
| 01/28/1998 | Electr | Resources | [Clips] HP-9100 Schematics |
| 01/26/1998 | X-Number | Welcome | James Redin's Curriculum |
| 01/23/1998 | Mech | Resources | [Articles] Recollections on the MADAS Calculator - Ray Mackay |
| 01/20/1998 | Mech | Resources | [Articles] Burroughs - Tools of the Trade - Michael Hancock |
| 01/17/1998 | Mech | Resources | [Clips] Cleaning Office Machines with 'LIX' |
| 01/16/1998 | Mech | Collectors | Frank Rauk - The Friden Web Page |
| 01/16/1998 | Electr | History | The Wang 360 System - Rick Bensene |
| 01/16/1998 | Electr | Collectors | Rick Bensene |
| 01/16/1998 | Electr | Album | Wang 360, Friden 130, Facit 1111, Sperry 661D - Rick Bensene |
| 01/12/1998 | Mech | Album | Madix Calculator - Klaus Bastian |
| 01/10/1998 | Electr | History | Old Casio Calculators - Ray Mackay |
| 01/10/1998 | Electr | Album | Casio Calculators |
| 01/10/1998 | Modern | Resources | Casio Resources - Ray Mackay |
| 01/10/1998 | Mech | Collectors | Ray Mackay |
| 01/03/1998 | Mech | Resources | Link to Michel Bardel's Listing |
| 01/03/1998 | Mech | Museums | Japanese Museum and Nixdorf Museum. |
| 01/03/1998 | Mech | Album | Austria Machine and Rous' Abacus. |
| 01/01/1998 | Mech | Resources | Article: Memorised Description of Comptometer's Mechanism. Ray Mackay. |
| 01/01/1998 | Mech | Album | Walther photos (Ray Mackay), and Odhner 1207 (Timo Leipala) |
| 01/01/1998 | Mech | Hist-III | Added section for Walther |
| 01/01/1998 | Mech | History | The Walther Company - Ray Mackay |
| 1998 | HAPPY NEW YEAR! | ||
| 12/28/1997 | Mech | History | My Years with Marchant - Ernie Jorgenson. |
| 12/21/1997 | Mech | Collectors | Yves Serra |
| 12/20/1997 | Electr | Album | Friden 132 - Courtesy of Bob Lichty. |
| 12/19/1997 | X-Number | Several | Updated Harold Layer links (collectors & museums) |
| 12/19/1997 | Mech | Collectors | Klaus Bastian, Lau Choon Meng |
| 12/19/1997 | Electr | Collectors | Frank Boehm, Tom Conte, Paul Williams |
| 12/15/1997 | Mech | Resources | Added Dick Rose's listing, and Rick Furr's Curta Page. |
| 12/12/1997 | Mech | Album | Odhner Russia, and Comptograph |
| 12/12/1997 | Mech | Hist-II | Updated info on Odhner section (Timo Leipala) |
| 12/11/1997 | Mech | Album | Faber-Castell Addiator S. Rule - Timo Leipala |
| 12/10/1997 | Mech | Album | 9 troncets - Guy Ball and Timo Leipala |
| 12/09/1997 | Mech | Album | Scheutz Printing Calculator - Differential Engine |
| 12/08/1997 | Mech | Refs | Included Andries Man bookmarks |
| 12/07/1997 | Collectors | Carl Friend - Minicomputer & Calculators | |
| 12/07/1997 | Mech | All | Added new section on Mechanical Calculators! |
| 12/01/1997 | Vintage | Album | Unisonic 711 photo |
| 11/05/1997 | Vintage | Album | Commodore US*8 photo |
| 10/24/1997 | Vintage | Resources | Reagrouped resources as a new Menu page |
| 10/22/1997 | Vintage | Collectors | Alex Knight - Calculator Technology Archive |
| 10/20/1997 | Vintage | Album | Added Garrett 2000 and Aristo M16 |
| 10/15/1997 | Vintage | Collectors | Ingo Heeskens - Mechanical Calculators |
| 10/10/1997 | Vintage | History | Updated info on Wang 300 in "The Doctor and his Calculators" article with Bob Otnes information. |
| 10/08/1997 | Vintage | Collectors | Michel Bardel - Collection de Machines ŕ Calculer anciennes |
| 10/06/1997 | Modern | Reviews | Posted article "RPN or ADL" |
| 10/04/1997 | Vintage | Collectors Museums |
Theo Lumens - Calculator Museum |
| 10/04/1997 | Vintage | History | Added page with related "News" |
| 10/04/1997 | Online | Calculators | Added 7 new Java calcs and slide rule. |
| 10/01/1997 | Modern | Added section "Modern Calculators" | |
| 09/29/1997 | Vintage | Album | Added set of TI calculators. |
| 09/27/1997 | Vintage | Album | Added set of HP calculators |
| 09/26/1997 | Vintage | Resources | Added Larry Gilbert's articles |
| 09/19/1997 | Vintage | Resources | Installed a Collector Database Listing |
| 09/12/1997 | Vintage | History | Added "Three Men and a Chip" by Irene Kim |
| 09/10/1997 | Vintage | History | Added articles written by Dr. Wlodek Mier-Jedrzejowicz |
| 09/06/1997 | Main | Menu | Installed a "Search Site" engine. |
| 08/01/1997 | Vintage | Resources | Installed Vintage Calculators Forum |
| 04/22//1997 | X#-Patent | Posted X-Number World in the Internet | |
