Text
Western Electric Company,. n.d. “Western Electric News”.
Text
The Bell Telephone Company of Chicago,. n.d. “Bell Telephone News”.
Text
American Telephone and Telegraph Company,. 1935. “The Bell System Technical Journal, Vol. 14”.
Text
American Telephone and Telegraph Company,. 1932. “The Bell System Technical Journal, Vol. 11”.
Text
American Telephone and Telegraph Company,. 1934. “The Bell System Technical Journal, Vol. 13”.
Text
n.d. “Sound Waves. International Telephone Journal”. William Graffis.
Person

A scientist, inventor, engineer, and innovator who is credited with patenting the first practical telephone.

 

Picture: CC0 | Wikimedia

1847
1922