Hellemans, Alexander, and Bryan Bunch. The Timetables of Science: A Chronology of the Most Important People and Events in the History of Science. Simon and Shuster, 1988.
303
Chisholm, Hugh, editor. Encyclopaedia Britannica. Eleventh, Cambridge University Press, 1911.
28: 583; 18: 874
Palmer, Alan, and Veronica Palmer. The Chronology of British History. Century, 1992.
263
Singer, Charles et al., editors. A History of Technology. Clarendon, 1958, 8 vols.
4: 658; 5: 218
Rosen, Michael. Alphabetical: How Every Letter Tells a Story. John Murray, 2013.
301-2
11 January 1838: Samuel Morse, developer of the Morse Code,...
National or international item
11 January 1838
Samuel Morse
, developer of the Morse Code, gave the first public demonstration of a telegraphed message from a steelworks in Morristown, New Jersey.
Encyclopædia Britannica Online. http://www.britannica.com/.
Rosen, Michael. Alphabetical: How Every Letter Tells a Story. John Murray, 2013.
301
1844: The first telegraph line in the US was built,...
National or international item
1844
The first telegraph line in the US was built, connecting Washington and Baltimore.
Encyclopædia Britannica Online. http://www.britannica.com/.
“Timeline: Biography of Samuel Morse 1791 - 1872”. About Inventors: Find A-Z Inventors.
November 1851: The first long-term undersea telegraph cable...
National or international item
November 1851
The first long-term undersea telegraph cable between Calais and Dover was opened to the public, although the first direct message from London to Paris was sent in 1852.
Chisholm, Hugh, editor. Encyclopaedia Britannica. Eleventh, Cambridge University Press, 1911.
525
Standage, Tom. The Victorian Internet. Walker and Company, 1998.