Select-O-Phone intercom system brochure
Select-O-Phone intercom system brochure
1920
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Demonstration telephone
Demonstration telephone
1920
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First transatlantic phone calls, using radio signals
First transatlantic phone calls, using radio signals
1927
Compagnia Generale Di Elettricita fluted shaft desk set
Compagnia Generale Di Elettricita fluted shaft desk set
1921
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Sallie Pero Mead
Sallie Pero Mead
Mathematician and wireless innovator
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Ericsson 1923 multi-line phones catalog
Ericsson 1923 multi-line phones catalog
1923
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Otto Julius Zobel
Otto Julius Zobel
Filter design and theory pioneer
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Gray Pay Station 1925 catalog
Gray Pay Station 1925 catalog
1925
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Siemens & Halske Naval Telephone
Siemens & Halske Naval Telephone
1920
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Fuld & Co Telephone and Telegraph Works
Fuld & Co Telephone and Telegraph Works
1926
Ralph Hartley
Ralph Hartley
Information theory innovator
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Sterling Telephones catalog
Sterling Telephones catalog
1923
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A Historical View of the San Francisco Exchange
A Historical View of the San Francisco Exchange
1927
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John J. Carty
John J. Carty
AT&T Chief Engineer
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Monarch Telephone
Monarch Telephone ad
1922
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Dictograph 1923 Catalog
Dictograph 1923 Catalog
1923
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Lester Germer
Lester Germer
Bell Labs physicist
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AT&T Annual Report, 1929
AT&T Annual Report, 1929
1929
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Black GPO Model 162
Black GPO Model 162
1929
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Bancroft Gherardi Jr.
Bancroft Gherardi Jr.
AT&T chief engineer and transmission pioneer
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Stromberg 1921 High Efficiency Switchboard catalog
Stromberg 1921 High Efficiency Switchboard catalog
1921
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Siemens and Halske 25-extension intercom
Siemens and Halske 25-extension intercom
1920
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WE A1
WE A1
1925
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AE 1A color brochure
Automatic Electric ad
1929
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Bauhaus Dessau telephone
Bauhaus Dessau telephone
1929
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WE 1924 catalog
WE 1924 catalog
1924
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Fuld Der Fernsprecher Im Privathaus brochure
Fuld Der Fernsprecher Im Privathaus brochure
1928
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Bell Labs building in NYC
Bell Labs building in NYC
1925
AT&T Annual Report, 1925
AT&T Annual Report, 1925
1925
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Chicago Telephone 1928 catalog
Chicago Telephone 1928 catalog
1928
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AT&T Annual Report, 1923
AT&T Annual Report, 1923
1923
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Harold Stephen Black
Harold Stephen Black
Invented the negative feedback amplifier
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NE 1927 catalog
NE 1927 catalog
1927
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AE 1A Repro - Red
AE 1A Repro - Red
1926
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Stromberg-Carlson 1178
Stromberg-Carlson 1178
1929
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Siemens and Halske Desk Set
Siemens and Halske Desk Set
1928
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Kellogg 1923 Catalog
Kellogg 1923 Catalog
1923
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Walter Sherman Gifford
Walter Sherman Gifford
AT&T president in the 1930s and 40s
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Monarch Candlestick
Monarch Telephone ad
1921
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Kellogg 1928 PBX Switchboards catalog
Kellogg 1928 PBX Switchboards catalog
1928
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C.1920 Gray Telephone Pay Station Co Hartford CT
C.1920 Gray Telephone Pay Station Co Hartford CT
1920
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Harry Nyquist
Harry Nyquist
Transmission engineering and communications systems
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AT&T Annual Report, 1922
AT&T Annual Report, 1922
1922
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Ericsson 1928 multi-line phones catalog
Ericsson 1928 multi-line phones catalog
1928
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WE 1922 Railroad Telephone catalog
WE 1922 Railroad Telephone catalog
1922
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Building for expanding telephone demand, 1928
Building for expanding telephone demand, 1928
1928
Frank B. Jewett
Frank B. Jewett
Radio telephony pioneer
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E. F. Caldwell & Co. Custom Handmade Candlestick
E. F. Caldwell & Co. Custom Handmade Candlestick
1920
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AT&T Annual Report, 1920
AT&T Annual Report, 1920
1920
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AT&T Annual Report, 1927
AT&T Annual Report, 1927
1927
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Fuld ‘Bauhaus’ Phone
Fuld ‘Bauhaus’ Phone
1927
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The U.S. has most of the world's telephones
The U.S. has most of the world's telephones
1929
New York Telephone building at 140 West Street
New York Telephone building at 140 West Street
1927
Western Union telegraph operator
Western Union telegraph operator
1923
Kellogg
Kellogg Switchboard and Supply ad
1922
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AE 1A
AE 1A
1926
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'Call by number'
AT&T / Bell System ad
1929
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Things Worth Knowing About The Telephone
Things Worth Knowing About The Telephone
1929
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GPO 232 With Cheese Drawer
GPO 232 With Cheese Drawer
1929
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Leich Telephones
Leich ad
1922
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Chicago Central Office Roller Skates
Chicago Central Office Roller Skates
1929
WE Model 102
WE Model 102
1927
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Lloyd Espenschied
Lloyd Espenschied
Coaxial cable co-inventor
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Gray Three-Slot Payhone
Gray Three-Slot Payhone
1920
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AE 2 With Gold Plated Bands and Dial
AE 2 With Gold Plated Bands and Dial
1925
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Henry Dreyfuss
Henry Dreyfuss
Industrial designer
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Fuld phone
H. Fuld & Co./TN ad
1927
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WE 551 Switchboard
WE 551 Switchboard
1927
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AE 21 Candlestick
AE 21 Candlestick
1922
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Ericsson 1923 telephone catalog
Ericsson 1923 telephone catalog
1923
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Small French telephone exchange
Small French telephone exchange
1926
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Clinton Davisson
Clinton Davisson
Bell Labs Nobel prize winner
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Kellogg 1926 Catalog
Kellogg 1926 Catalog
1926
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AT&T Annual Report, 1924
AT&T Annual Report, 1924
1924
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Sosthenes Behn
Sosthenes Behn
ITT founder
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Giles Gilbert Scott
Giles Gilbert Scott
Designer of the UK red telephone kiosk
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AE 1929 catalog
AE 1929 catalog
1929
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John Bertrand Johnson
John Bertrand Johnson
Discovered thermal noise in conductors
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BTMC 1924 Catalog
BTMC 1924 Catalog
1924
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Keystone Dial Candlestick
Keystone Dial Candlestick
1920
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AT&T truck leaving 195 Broadway carrying shareholder dividend payments
AT&T truck leaving 195 Broadway carrying shareholder dividend payments
1922
AE 21 Wall Phone
AE 21 Wall Phone
1922
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AT&T Annual Report, 1921
AT&T Annual Report, 1921
1921
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Theodore Gary
Theodore Gary
Built empire of independent telephone companies
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Kellogg Dial Grabaphone
Kellogg Dial Grabaphone
1922
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Automatic Electric
American Electric ad
1921
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AT&T Annual Report, 1926
AT&T Annual Report, 1926
1926
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Stan Laurel promo pic
Stan Laurel promo pic
1928
Reproduction Clear GPO 162
Reproduction Clear GPO 162
1929
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Tønsberg Telefonforening telephone
Tønsberg Telefonforening telephone
1920
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C&P Telephone repair shop
C&P Telephone repair shop
1925
AT&T Annual Report, 1928
AT&T Annual Report, 1928
1928
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WE 100-Type Phone With "French" E1 Handset
WE 100-Type Phone With "French" E1 Handset
1927
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