1932
1934

1933

Kellogg Model 900 'Pyramid'
Kellogg Model 900 'Pyramid'
Kellogg Switchboard and Supply
Nazis launch anti-semitic campaign against (and ultimately seizure of) Jewish-owned Fuld & Co.
Nazis launch anti-semitic campaign against (and ultimately seizure of) Jewish-owned Fuld & Co.
PDF: AT&T Annual Report, 1933
AT&T Annual Report, 1933
Ad: 'The multiplication of you'
'The multiplication of you'
Diagram: Map of Bell System Overseas Telephone Circuits
Map of Bell System Overseas Telephone Circuits
ITT's Behn meets with Hitler, begins cash payments to the SS and Gestapo
Sosthenes Behn
PDF: NE 1933 catalog
NE 1933 catalog
Bell Labs engineers discover that attenuation drops as wave frequency increases
John Renshaw Carson Sallie Pero Mead Sergei Alexander Schelkunoff
PDF: The Bell System
The Bell System