National Museum of American History
@amhistorymuseum
Open every day except December 25, from 10:00 a.m. to 5:30 p.m. Visit our site to learn more and explore: https://t.co/UzeJSDqYyQ
13-11-2008 15:13:05
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✖➕➖➗ Today in 1912: Engineer & Hewlett-Packard Co. cofounder David Packard born. This is a 1973 calculator in our collection. #MathHistory
