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The Metropolitan Telephone and Telegraph Co. List of Subscribers, September 1, 1894
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Styles of Long Distance Instruments
[District selector frame in a dial exchange.]
Communications, Telephone Exchange.
[Overseas switchboard at 32 Avenue of the Americas.]
[New York City Telephone Exchange.]
[Switchboard at the long distance headquarters of the American Telephone and Telegraph Company.]
[Sender frames, dial equipment.]
[General view of some of the dial equipment, Trafalgar Central Office.]