National Geographic : 1914 Jan
The Energizer of Business IN a metropolitan power-house there must be generators large enough to furnish millions of lights and provide electrical cur rent for thousands of cars and factories. Each monster machine with the power of tens of thousands of horses is energized by an unobtrusive little dynamo, which is technically known as an "exciter." This exciter by its electric im pulse through all the coils of the generator brings the whole mech anism into life and activity. A similar service is performed for the great agencies of business and industry by the telephones of the Bell System. They carry the currents of communication everywhere to energize our intricate social and business mechanism. United for universal service, Bell Telephones give maximum efficiency to the big generators of production and commerce. AMERICAN TELEPHONE AND TELEGRAPH COMPANY AND ASSOCIATED COMPANIES One Policy One System Universal Service "Mention the Geographic-It identifies you."