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سطر 54:
* {{commons category-inline|Telegraphy}}
* {{Cite EB1911|wstitle=Telegraph|short=x}}
* [http://www.porthcurno.org.uk/ The Porthcurno Telegraph Museum] {{wayback|url=http://www.porthcurno.org.uk/ |date=20130927210948 }} The biggest Telegraph station in the world, now a museum
* [http://distantwriting.co.uk/ Distant Writing] — The History of the Telegraph Companies in Britain between 1838 and 1868
* [http://siris-archives.si.edu/ipac20/ipac.jsp?uri=full=3100001~!140235!0 Western Union Telegraph Company Records, 1820–1995] Archives Center, National Museum of American History, Smithsonian Institution.
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