National Geographic : 1912 Feb
The Open Doors On the Bell Highway The Bell system opens more than six million telephone doors, so that each subscriber can talk with any other subscriber. It provides a highway of universal communication to open and connect all llrl these doors. It also furnishes the vehicle for use on this highway, to carry speech from door to door throughout the land. The Bell highway is used daily by more than twenty million people-all telephone neighbors by means of universal service. AMERICAN TELEPHONE AND TELEGRAPH COMPANY AND ASSOCIATED COMPANIES One Policy One System Universal Jervice "Mention the Geographic-It identifies you."