Difference between revisions of "Semaphore Telegraph"
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Revision as of 01:18, 4 December 2007
Semaphore Telegraph
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References
- Beauchamp, K. G. History of Telegraphy.
- Coe, Lewis. The Telegraph: A History of Morse's Invention and Its Predecessors in the United States. Jefferson, NC: McFarland & Company, Inc., Publishers, 1993.
- Holzmann, Gerard J. The Early History of Data Networks.
- Lubrano, Annteresa. The Telegraph: How Technology Innovation Caused Social Change.
- Lucy, N.
- Shiers, George. The Electric Telegraph: An Historical Anthology.
