On This Day in Telephone History July 17TH 1911 The Mountain States Telephone and Telegraph Company was Formed. Colorado Telephone, Tri-State Telephone, and Rocky Mountain Bell merged to form The Mountain States Telephone and Telegraph Company.

On This Day in Telephone History July 17TH 1911

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On This Day in Telephone History July 17TH 1911 The Mountain States Telephone and Telegraph Company was Formed.

Colorado Telephone, Tri-State Telephone, and Rocky Mountain Bell merged to form The Mountain States Telephone and Telegraph Company.