File:Edison and Shelby Light Bulbs (1899) (ADVERT 289).jpeg - Wikimedia Commons
November 4, 1879: Thomas Edison Invents the Electric Light, Files Patent – Constituting America
Who invented the Lightbulb?
The Electric Light System - Thomas Edison National Historical Park (U.S. National Park Service)
G.E.'s History of Innovation - The New York Times
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Thomas Edison: The Man Behind the Light Bulb (Little Inventor): Raatma, Lucia Tarbox: 9781977109743: Amazon.com: Books
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Edison Light Bulb | Smithsonian Institution
Edison's light bulb turns 135 | National Museum of American History
Invention of the Light Bulb: Davy, Swan, and Edison - Enchanted Learning
Incandescent light bulb - Wikipedia
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Who Invented the Lightbulb?
Thomas Edison's Patent Application for the Light Bulb (1880) | National Archives
History of the lightbulb from incandescent to compact fluorescent
Thomas Edison Invents Light Bulb and Myths About Himself | Time
Thomas Edison Patents: The Lightbulb & Beyond
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