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lreed76: Lab building at Edison National Historic Park
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lreed76: Precision machine shop, Edison National Historic Park
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lreed76: Machine shop, Edison National Historic Park
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lreed76: Machine shop, Edison National Historic Park
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lreed76: Early motion picture projector, Edison National Historic Park
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lreed76: Old motion picture projector, Edison National Historic Park
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lreed76: Painting of Edison and bust of Humboldt, Edison National Historic Park
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lreed76: Photos of Presidents Harding, Coolidge, Hoover, and Wilson, Edison National Historic Park library
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lreed76: Lamp in Edison's library, Edison National Historic Park
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lreed76: Photos of Presidents Coolidge, Hoover, and Wilson, Thomas Edison's library, Edison National Historic Park
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lreed76: Precision machine shop, Edison National Historic Park
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lreed76: Precision machine shop, Edison National Historic Park
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lreed76: Early Edison invention: improved telegraph
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lreed76: Early light bulbs, Edison National Historic Park
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lreed76: Old light bulbs, Edison National Historic Park
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lreed76: Early phonograph, Edison National Historic Park
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lreed76: Early phonograph, Thomas Edison National Historic Park
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lreed76: Camera used in photo department, Thomas Edison National Historic Park
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lreed76: Edison recording device, Thomas Edison National Historic Park
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lreed76: Wax cylinder phonograph, Thomas Edison National Historic Park
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lreed76: Earliest known wax cylinder phonograph, 1887, Thomas Edison National Historic Park
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lreed76: Wax cylinder phonograph, 1888, Thomas Edison National Historic Park
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lreed76: "Military," or portable, phonograph, 1889
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lreed76: Phonograph, Edison National Historic Park
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lreed76: Sound room, Thomas Edison National Historic Park
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lreed76: Phonograph, Edison National Historic Park
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lreed76: Recording telegraph, 1877, Thomas Edison National Historic Park
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lreed76: Earliest phonograph, 1877, Edison National Historic Park
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lreed76: Earliest phonograph, 1877, Thomas Edison National Historic Site
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lreed76: Improved tinfoil phonograph, 1878, Edison National Historic Park