Issue No. 03 - July-September (2001 vol. 23)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/85.948903
<p>Between 1884 and 1930, the city of Chicago emerged as a center of manufacture for a new kind of machine, designed especially to assist in ordinary addition. Chicago inventions and products would shape the adding machine industry into the second half of the 20th century.</p>
P. A. Kidwell, "'Yours for Improvement'-The Adding Machines of Chicago, 1884-1930," in IEEE Annals of the History of Computing, vol. 23, no. , pp. 3-21, 2001.