1914
1916
Ericsson Home Switchboard
Föderl-System Signal Transmitter Telephone
Roycroft Custom Desk Set
System Berliner Phone
Telephone Prive Nationale phone
Western Electric 10-Station Wall Switchboard
Western Electric Drop Switchboard
500 Western Electric employees die in disaster on way to company picnic
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Andrae c1915 Giant Telephones
Ad: Western Electric
Photo: Suffragist Genevieve Clark Thomson
First transcontinental phone call (between Bell and Watson)
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AT&T Annual Report, 1915
Arnold perfects the vacuum-tube telephone amplifier
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Connecticut Telephone 1915 Intercoms catalog
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Farr 1915 Catalog
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How Bell Invented The Telephone (Watson Speech)
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Kellogg 1915 Switchboards catalog
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Kellogg 1915 Switchboards catalog
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North 1915 Magneto Telephones Bulletin
