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Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8.6 |
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บรรทัด 36:
* [http://speedwell.org/Vail/AVbio.html Alfred Vail Biography at speedwell.org]
* [http://www.du.edu/~jcalvert/tel/morse/morse.htm The Electromagnetic Telegraph by J. B. Calvert]
* [http://www.jerseyhistory.org/findingaiddirnb.php?dir=EAD/faid0500&aid=mg0050 Profile of Alfred Vail (Manuscript Group 50, Alfred Vail Papers, The New Jersey Historical Society)] {{Webarchive|url=https://web.archive.org/web/20170821001044/http://www.jerseyhistory.org/findingaiddirnb.php?dir=EAD%2Ffaid0500&aid=mg0050 |date=2017-08-21 }}
* [http://siarchives.si.edu/findingaids/FARU7055.htm#FARU7055i Vail Telegraph Collection (Record Unit 7055, Smithsonian Institution Archives)]
*{{Citation| last = Iles| first = George| year = 1912| title = Leading American Inventors| place =New York| publisher = Henry Holt and Company| url = http://www.archive.org/details/leadingamericani00ilesrich|pages=158–176}}
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