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
.