Showing how the new accounting device for department stores is operated. It does the work of a hundred or more clerks. Left to right, Prof. L. F. Woodruff of Technology and Edward Regal, its inventors.

Digital Commonwealth — Boston Public Library

Showing how the new accounting device for department stores is operated. It does the work of a hundred or more clerks. Left to right, Prof. L. F. Woodruff of Technology and Edward Regal, its inventors.

[ca. May 1928]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Inventions

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