National Museum of American History Keuffel & Esser 4088-3 Polyphase Duplex Slide Rule National Museum of American History Keuffel & Esser Instruction Manual for Polyphase Duplex Slide Rule National ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This twelve-page booklet was received ...
No frontier sheriff ever strode more proudly down Main Street than Tom Apostol did across the campus of the University of Utah in 1941, wearing his own trusty side arm—a 10-inch Keuffel & Esser ...
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