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Case Files: William S. Burroughs | The Franklin Institute
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Amazon.com: Patent Prints - 1888 Calculator Patent Art - Science Patent Art Poster (8.5 x 11) - 236: Posters & Prints
William S. Burroughs (1857-1898) - Find a Grave Memorial
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Adding Machines -- Ten Keys & Fewer | National Museum of American History
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The Complete History of The Burroughs Adding Machine - History-Computer
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The History of Calculators and William Seward Burroughs
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The History of Calculators and William Seward Burroughs
William Seward Burroughs | Biography, Adding Machine, & Facts | Britannica
Case Files: William S. Burroughs | The Franklin Institute
KRYSTAL M. BOND William Seward Burroughs CALCULATOR. - ppt download
Adding-Listing Machines
The Complete History of The Burroughs Adding Machine - History-Computer
American Arithmometer Company - Wikipedia
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Burroughs Adding Machine | The Franklin Institute
William Seward Burroughs patents his calculating machine - Event - Computing History
Adding-Listing Machines
