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Eveready "Long Life" telephone battery

Eveready "Long Life" telephone battery

Union Carbide and Carbon Corporation
circa 1950
unknown mechanical telephones

unknown mechanical telephones

American
late 19th-early 20th Century
Couch automatic telephone

Couch automatic telephone

S. H. Couch Company
dated 1906
telephone combination handset (receiver and earpiece)

telephone combination handset (receiver and earpiece)

Société Générale des Téléphones
1880
Phelps single crown receiver (or transmitter)

Phelps single crown receiver (or transmitter)

Societé du Telephone Edison
1879-1880
Phelps duplex receiver/transmitter

Phelps duplex receiver/transmitter

American Speaking Telephone Company
circa 1878
printing block

printing block

Bell Telephone Laboratories
after 1968
telegraph relay

telegraph relay

American Telephone and Telegraph Company
1890-1920
high-speed polarized telegraph relay

high-speed polarized telegraph relay

Western Electric Company
1900-1920
high-speed polarized telegraph relay

high-speed polarized telegraph relay

Western Electric Company
1900-1920
telegraph relay

telegraph relay

Western Electric Company
circa 1910
British post office polar telegraph relay

British post office polar telegraph relay

Automatic Telephone Manufacturing Company, Ltd
1912-1930
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