thomas edison > a lifetime of invention : early life
early life > before the lamp:
edison's ancestors and early years, 1730-1862
telegraph work and early inventions, 1862-1876
menlo park, 1876-1877
early life > the phonograph:
menlo park, 1878-1879
the phonograph, 1877-1878
returning to the phonograph
  thomas edison > website navigation thomas edison > home page thomas edison > timeline : early life thomas edison > timeline : inventing the incandescent lamp thomas edison > timeline : after lighting thomas edison > timeline : legacy of invention thomas edison > classroom thomas edison > interactive modules