Edisonian Museum http://www.edisonian.com/
Photographs and short descriptions of various light bulbs, lamps, motors, batteries, and other inventions of Thomas Edison.
Inventing Entertainment http://memory.loc.gov/ammem/edhtml/
Devoted to the early motion pictures and sound recordings of the Edison Companies; includes overviews by genre and chronology, descriptions of the technology, and selected online audio and video.
Thomas A. Edison Papers http://edison.rutgers.edu/
A documentary editing project at Rutgers University seeking to publish the inventor's papers online. Includes patents, clipings, and ntoes, as well as bibliographies, chronologies, and links to related resources.