Rutgers University
Thomas Edison Papers: Biography of Thomas Edison
The first person to make the storage battery practical, with 147 patents, Edison's life is a testimony to invention. This biography, in outline form, is in two parts; go to 1879 site after this.
Smithsonian Institution
Lemelson Center: Thomas Edison's Inventive Life
This site is a complete resource for learning about Edison's life, his inventions, and electricity. If you like experimenting, there are instructions included for how to make your own light bulb. Good photos.