1870s 1880s 1890s 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s
1912
1914
◀

1913

▶
Ericsson 50-line switchboard
Ericsson 50-line switchboard
L.M. Ericsson
Kellogg & National Cash Register Company special telephone and device
Kellogg & National Cash Register Company special telephone and device
Kellogg Switchboard and Supply
Wilhelm Telephone Mfg. Co. Model No. 16 bronze desk set
Wilhelm Telephone Mfg. Co. Model No. 16 bronze desk set
Wilhelm Telephone Mfg.
Vacuum tube repeater demonstrated
Lee de Forest
PDF: AT&T Annual Report, 1913
AT&T Annual Report, 1913
Slideshow: Telephone Exchanges of the World, 1913
Telephone Exchanges of the World, 1913
Slideshow: 27 photos
AT&T divests Western Union
AT&T divests Western Union
PDF: Ericsson 1913 switchboards catalog
Ericsson 1913 switchboards catalog
AT&T forced to open up its long-distance lines to independent competitors
AT&T forced to open up its long-distance lines to independent competitors
PDF: Ericsson 1913 switchboards catalog (abridged)
Ericsson 1913 switchboards catalog (abridged)
U.S. drops antitrust suit against AT&T, cementing its quasi-monopoly
U.S. drops antitrust suit against AT&T, cementing its quasi-monopoly