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1950

1952

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1951

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Edison Televoice Writer

Edison Televoice Writer

First direct-dialed transcontinental call

First direct-dialed transcontinental call

PDF: AT&T Annual Report 1951

AT&T Annual Report 1951

Ad: Edison televoice writer

Edison televoice writer

Video: The Step-By-Step Switch

The Step-By-Step Switch

Direct long-distance dialing begins