http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm The Electric Telegraph 1860-1914 http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm The Electric Telegraph 1860-1914 The Electric Telegraph (1838–1914) The Electric Telegraph 1860-1914 http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm The Electric Telegraph (1838-1914) http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm http://earlyradiohistory.us/sec002.htm Electric Telegraph History The Electric Telegraph (1838–1914)