![](http://www.alamy.com/thumbs/6/92FAEDC4-4D1D-4D1B-92D8-C30B43D2D2AB/D96M4X.jpg)
Thomas Alva Edison (1847-1931) American inventor. Engraving c1880
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
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Keywords: 1847-1931, alva, american, archival, archive, c1880, edison, engraving, historical, history, inventor, inventor., physics, scientist, sound, thomas