During the Spanish flu pandemic of 1918 the best medical minds in the country were focused on the problem of discover
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Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/7/2016
The National Cash Register Company produced this Model 421 cash register around 1914. The register was used in a Marshall Field & Company department store. The register has three columns of keys for entering numbers, and a fourth column of function keys. The operating crank is on the right si
