Thomas Alva Edison (1847-1931) American inventor, at work on incandescent light bulbs in his laboratory at Menlo Park.

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Photo credit: © World History Archive / Alamy / Afripics
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Keywords: 1847-1931, alva, american, archival, archive, bulbs, edison, historical, history, incandescent, inventor, laboratory, light, menlo, park., scientist, thomas, work