Chapter 23 No.23

Vail, Alfred, arranges Morse code, joins Morse, 70;

makes telephone apparatus, 72;

operates first line, 90;

improves telegraph, 100.

Vail, Theodore, joins telephone forces, 180;

puts wires underground, 239;

adopts copper circuits, 240;

resumes telephone leadership, 244;

talks across continent without wires, 257.

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Wats