Over the years, many historic web sites about HP calculators have been lost to time. The purpose of this web site is to restore them, preserving the historic record for future generations of HP calculator users and calculator historians.
If you have saved any old HP calculator web sites that are no longer online and would like to add them to this collection, please contact me at eric at hpcalc dot org. Additionally, if any of the below sites are incomplete and you have files to fix the gaps, please send them to me as well.