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Description

Rapid Calculator Company; 309 South Sisteeth Street, Philadelphia, Pa.; The Famous 10 Pound 18 Digit Mathematician; Letterhead consists of image of calculator with text

Rights

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. Please contact Archives & Special Collections, Gordon Library, Worcester Polytechnic Institute for information regarding reproduction, distribution in any form, or other commercial uses.


Keywords

Letterheads, Philadelphia (Penn.), Calculators, Pennsylvania

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