In October 1879, Edison "perfected" the light bulb | Signify Company Website
Thomas Edison Incandescent Light Bulb | On this day in 1878, Thomas Edison began development on the first practical incandescent light bulb. #InnovationInHistory | By Stanford Research Park | Facebook
Edison invents the light bulb...on this day | Share America
Edison's Lightbulb | The Franklin Institute
6 Famous Inventors Who Didn't Actually Invent Their Masterpiece
The Light Bulb - Thomas Edison and the Invention of the Light Bulb
Thomas Edison: How He Invented the Light Bulb and Changed the World | by John Adam Ledford | Readers Hope | Medium
Thomas Edison Light Bulb - Ohio Memory Collection -