Voice Over Wire
150th Year Celebration
The Telephone

Alexander Graham Bell

Attic Laboratory

Charles Williams Jr.
 Manufacture
Telegraph Instruments

Attic Diorama View

Left - Thomas A. Watson
Right  - Alexander Graham Bell

The Harmonic Telegraph Experiments

Preface to the Telephone Discovery

Telephone Patient Drawing

Working Telephone Circuit Layout

Transceiver
One at each end.

1876-2026
150th Year Celebration
The Telephone

*  *  *
Four Years Later

The PhotoPhone

Voice Over Light
Just Four Years Later
1880
The Photophone
Click Here
by
Pioneers in the Telephone Industry

Pioneers Network
Volunteers

On Tour Presentation
The Discovery

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