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1888
1890
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1889

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Gray No. 1 'Silver Dollar' Cabinet
Gray No. 1 'Silver Dollar' Cabinet
Gray Telephone Pay Station
Gray Pay Telephone
Gray Pay Telephone
Gray Telephone Pay Station Western Electric
Almon Strowger invents the automatic switch
Almon Strowger
PDF: American Bell Telephone Annual Report, 1889
American Bell Telephone Annual Report, 1889
Photo: Ericsson male employees org chart
Ericsson male employees org chart
Gray patents the coin-operated payphone mechanism
Gray patents the coin-operated payphone mechanism
PDF: Ericsson 1889 catalog
Ericsson 1889 catalog
PDF: Eureka Electric 1889 Catalog
Eureka Electric 1889 Catalog