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1860s
1 image
Reis' telephone
1870s
15 images
First telephone central office
1880s
19 images
Ericsson's Tulegatan factory
1890s
27 images
Columbia Dry Cell Battery introduced, making liquid phone batteries obsolete
1900s
41 images
Girl on phone
1910s
25 images
When To Ask For INformation
1920s
19 images
Western Union telegraph operator
1930s
23 images
Conference Telephone Service
1940s
30 images
Potsdam conference operators
1950s
28 images
IT&T acquires Kellogg
1960s
34 images
Contempra
1970s
20 images
Picturephone
1980s
12 images
British Telecom logo
1990s
1 image
Clinton in the oval office