PBS
Pbs: Tesla, Master of Lighting
Inventor Nikola Tesla is the subject of this extensive PBS site. In addition to information on Tesla's life and work, the site offers insight into the ways in which society and invention affect each other.
Library of Congress
Loc: Alexander Graham Bell Family Papers
All the primary source documents of the Graham Bell Family can be found at this Library of Congress site. An exhaustive site that is interesting to peruse.
US National Archives
Nara: Teaching With Documents: Telephone and Light Patent Drawings
A lesson plan about Alexander Graham Bell's patent for the telephone and Thomas Edison's patent for the electric lamp. Contains good background information and historically pertinent documents. It also discusses the role corporations...
National High Magnetic Field Laboratory
Magnet Academy: Marconi Radio 1897
A number of distinguished scientists had a hand in the discovery of "wireless telegraphy," but it was the work done by Guglielmo Marconi that is credited with providing the basis of radio as we know it today.
Massachusetts Institute of Technology
Mit: Invention of the Week: Alexander Graham Bell
This site provides a biographical sketch of Alexander Graham Bell and his inventions. Find out about Bell's patents in addition to the telephone.