1936
1938

1937

AE 50 "Jukebox"
AE 50 "Jukebox"
Automatic Electric
Black Model 302
Black Model 302
Western Electric
Green GPO 332
Green GPO 332
General Post Office/BT
Red 332
Red 332
General Post Office/BT
Red AE50 Jukebox
Red AE50 Jukebox
Automatic Electric
Red model 302
Red model 302
Western Electric
Secraphone Secure Phone
Secraphone Secure Phone
General Post Office/BT
WE 354
WE 354
Western Electric
Alec Reeves conceives of pulse code modulation
Alec Reeves
PDF: AT&T Annual Report, 1937
AT&T Annual Report, 1937
Ad: Long Distance Rate Reductions
Long Distance Rate Reductions
Video: Jean Arthur in Easy Living
Jean Arthur in Easy Living
First Nobel awarded for work done at Bell Labs (electron diffraction)
First Nobel awarded for work done at Bell Labs (electron diffraction)
PDF: Ericsson 1937 switchboard catalog
Ericsson 1937 switchboard catalog
Stibitz builds the 'Model K' relay adder (calculator) on his kitchen table
George Stibitz
PDF: Rural Telphone Lines
Rural Telphone Lines
PDF: The Birth and Babyhood Of the Telephone, By Thomas Watson
The Birth and Babyhood Of the Telephone, By Thomas Watson