The Lines of Morse's Electro-Magnetic Telegraph, from The Weekly Herald, New York, January 29, 1848. The map shows the path of the Speed Line, running from Detroit to Milwaukee.
at http://www.telegraph-history.org/map.htm
The Lines of Morse's Electro-Magnetic Telegraph, from The Weekly Herald, New York, January 29, 1848. The map shows the path of the Speed Line, running from Detroit to Milwaukee.
at http://www.telegraph-history.org/map.htm
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