Edison did not invent the first electric light bulb, but instead invented the first commercially practical incandescent light. Source
Edison showed his light bulb burning in December, 1879.
Of course, he was a very busy inventor.
- All About Edison and His Inventions
- Lighting a Revolution: A 19th Century Invention Factory (Interactive)
- Listen to Edison’s recordings
- The Desire to Succeed (ramkh2011.wordpress.com)
- Lighting the World; Edison’s Invention of Light Bulb 134 Years Ago, October 18, 1879. (dshenai.wordpress.com)