Millionaire Calculator Machine Explained - Everything You Need To Know - History-Computer
Mystery Dating of the World-famous 'Millionaire' Calculating Machine Solved | blog@CACM | Communications of the ACM
The Inner Workings of Antique Calculators Dramatically Photographed by Kevin Twomey — Colossal
Millionaire Calculator by Hans W. Egli Auction Number 2763T Lot Number 1194 | Skinner Auctioneers
John Wolff's Web Museum - Millionaire - Technical Description
Stumbled across the first commercially available calculator, used by Harvard astronomers at the turn of the last century. “The Millionaire” debuted in 1899, and could multiply two eight digit numbers in under
Millionaire Calculating Machine | National Museum of American History