Biography

Edisons Early Years

Telegraph Work

An Improved Phonograph

Other Ventures Ore milling and Cement

Motion Pictures

Edisons Later Years

Early Inventive Career

Menlo Park

West Orange Laboratory

Later Years

Learning about electricity

Variations on the telegraph

Starting a business starting a family

The Invention Factory

Telephone

Phonograph

Electric light

Starting fresh

Failure

Electricity in a box

Leisure time

Serving the nation

One last grand experiment

Legacy

Death

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