1935
1937

1936

BTMC model 2725 ('Antwerp') phone
BTMC model 2725 ('Antwerp') phone
ITT Bell Telephone Manufacturing Company
Dali creates the Lobster Phone
Dali creates the Lobster Phone
PDF: AT&T Annual Report, 1936
AT&T Annual Report, 1936
Ad: Special Sunday Rates
Special Sunday Rates
Photo: Paris long distance central office
Paris long distance central office
Video: Introduction to the Dial Telephone (AT&T)
Introduction to the Dial Telephone (AT&T)
Speech synthesizing system demoed at Bell Labs
Homer Dudley Harvey Fletcher
PDF: Kellogg 1936 Catalog
Kellogg 1936 Catalog
Ad: Conference calling service
Conference calling service
Mead, Carson and Schelkunoff publish their 'Hyper frequency wave guides' paper
John Renshaw Carson Sallie Pero Mead Sergei Alexander Schelkunoff
PDF: Simplex Fernsprecher brochure
Simplex Fernsprecher brochure
Ad: British Dictograph
British Dictograph
PDF: Stromberg-Carlson 1936 Catalog
Stromberg-Carlson 1936 Catalog
PDF: The Telephone In America
The Telephone In America