The Original Atlantic Cable
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“The illustration shows seven copper wires (4) forming a conductor; a wrapping of thread (3) soaked in pitch; several layers of gutta percha (2); and the covering of twisted wires (1)."—Webster, 1920
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Telephone and Telegraph IndustrySource
Webster, Hutton Modern European History (Boston, MA: D.C. Heath & CO., 1920)
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