North American Numbering Plan Enables Direct-Dial Coast-to-Coast Calls, November 10, 1951

With the rollout of the North American Numbering Plan, direct-dial coast-to-coast telephone service begins in the United States.

With the rollout of the North American Numbering Plan, direct-dial coast-to-coast telephone service begins in the United States.

Date: November 10, 1951

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