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Telephone service in America

Faraday, Michael, head and shoulders portrait. Mounted on card. With inscription reading "Michael Faraday. This telephotograph was printed from the untouched negative received 18 July 1925 at New York City from Chicago over a telephone circuit 931 miles in length. the time required for transmission was 7 1/2 minutes. John J Carty. Vice-president, American Telephone and Telegraphic Co. 195 Broadway, New York City