Edison International traces its origins back to July 4, 1886. On that day, the partnership of Holt and Knupp (which later became the Visalia Electric Light and Gas Company) first used a steam engine fueled by cord wood to power brilliant arc lights during Visalia's evening 4th of July celebrations.
Edison began his career as an inventor in Newark, New Jersey, with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877.
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