Early Office Museum
The Early Office Museum? engages in research on the evolution of offices and business technology based on original documents and artifacts.
An excellent site about calculator collecting - By Guy Ball
Museum of HP Calculators
Not only is this a good site for the history of the
HP calculator, there is also information about
collectible calculators and their value at this site.
The Classic Typewriter Page
Antique typewriter facts, collecting and care tips, and fun
Office Machines Americana
Chuck & Rich's Antique Typewriter website and museum
The Early Typewriter Collectors Association
The Qwerty Connection
A website entirely devoted to the Comptometer.
Office-collectibles website Comptometer page.