Josep Balsach. mipaginapersonal

The Calc Machines (DIE RECHENMASCHINEN) E Martin

http://www.nzeldes.com/HOC/HOC_Core.htm

Arithmometre.com (Valéry Monnier)

mechanicalculator (Kees Nagtegaal) 

vcalc.net/curta_simulator

photocalcul

Arc Reglas de Cálculo  

digilander.libero.it/giuseppecaltagirone/index.

home.ix.netcom.com/~hancockm/

home.vicnet.net.au/~wolff/calculators/welcome.htm

machineacalculer.free.fr/

ourworld.compuserve.com/homepages/Michel_Bardel

people.wiesbaden.netsurf.de/~ratz/default.htm

perso.wanadoo.fr/yves.serra/

users.lewiston.com/ejorgens/office/index.htm

1.131.telia.com/~u13101111/collection.html#calc

vegter.hivemind.net/

calculators.szrek.com/

cbi.umn.edu/

computerhistory.org/

dotpoint.com/xnumber/

geocities.com/SiliconValley/Horizon/1404/

geocities.com/SiliconValley/Park/7227/

hpmuseum.org/

ifhb.de/

mortati.com/glusker/

museoscienza.org/ancora/Default.htm

officemuseum.com/calculating_machines_adders

oldcalculatormuseum.com/

or.uni-bonn.de/home/muuss/arithmeum/

oughtred.org/

ph-ludwigsburg.de/mathematik/mmm/

taswegian.com/MOSCOW/mechbystr.html

thomasfowler.org.uk/

typewriter.net/museo/sala13.htm

uni-greifswald.de/~wwwmathe/RTS/node2

uspto.gov/patft/index.html

vcalc.net/

vintagecalculators.com/index.html

webcom.com/calc/main.html

cruzio.com/~vagabond/ComptHome.html

mechrech.info/

tan-gram.de

cs.unc.edu/Outreach/vr/computer_museum/Gallery1page

Contributions to the History of Mechanical Calculation 

Michel Bardel's Dictionary

Michel Bardel's List

Millionaire Calculator

Original Documents on the History of Calculators

Patent database (the great encyclopedia of mech calculating)

US Patent Office Database

Histoire de l'informatique

Reinhard Atzbach - Literatur

Topeka Computing Museum

Mathematisches Maschinen-Museum

Early Calculators

Ernie Jorgenson's Office Machine Americana

Yesterday's Office

Vintage Calculators 

Recuerdos del Cálculo Mecánico

The Oughtred Society

reglasdecalculo.com  

Early Office Museum

www.schneemann.de/

www.nicolamarras.it/calcolatoria

www.sohu.com

www.crisvandevel.de/index.htm

www.rechnerlexikon.de

• Juan Ramón Gracia Typewriterhousecollector.com
• Virtual typewriter museum (Paul Robert)
• Typewriter.be by WVRompuy and Guy Pérard
• scrittura-meccanica.it
• typewriter-muzeum.pl
• Antique Typewriters  (Martin Howard)
• European Typewriter Project
• The Classic Typewriter Page (2) (Richard Polt)
• Portable typewriters reference site (Will Davis)
• Portable typewriters (Richard Milton)
• Antique typewriter museum (Chuck & Rich)
• Arnold Betzwieser
• Hartmut Quast
• T&T Typewriters
• Finnish Business College
• Luigi Esposito
• Landbee (Les Owen)
• Chestnut Ridge Typewriter Museum
• Máquinas de Escrever Antigas (Fernando Costa)
• Typewritercollector.com (Anthony Casillo)
• Eclectisaurus (> Museums)
• Typewriter Illustrated Encyclopedia
• The Tanner page
• Swedish Typewriter page
• Virtuelles Schreibmaschinenmuseum (German)
• Philippe Campiche (French)
• Shannon Johnson
• Mike Campbell
• MyTypewriter (restored typewriters for sale)
• Braille: APH Callahan Museum
• Toy typewriters, 2
• The Classic Typewriter Page by Richard Polt
• Shannon Johnson's website
• Antique Typewriter Down Under Connection  H Price
• Office Machine Americana  Will Davis
• Antique Typewriter Website by Mike Campbell

• Jett Morton's Typewriter page

• www.typewriterschubert.magix.net

·  Museu de la Tècnica de l'Empordà (Figueras, Spain)

·  Deutsches Schreibmaschinen-Museum (Bayreuth, Germany)

·  Schrijfm@chinemuseum (Belgium)

·  Scryption (Holland)

·  Stephan Beck (Switserland)

·  Peter Mitterhoffer Schreibmaschinenmuseum(Italy)

·  Deutsches Schreibmaschinen-Museum (Bayreuth, Germany)

·  Publicly dispayed typewriters worldwide  

www.maquinasantiguas.com

www.Breker.com