File:PSM V23 D562 The reis telephone transmitter of 1861.jpg

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Description The Reis telephone transmitter of 1861
Date
Source Popular Science Monthly Volume 23
Author Unknown authorUnknown author
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current17:07, 18 September 2014Thumbnail for version as of 17:07, 18 September 2014983 × 780 (42 KB)Ineuw (talk | contribs)Cleaned image and improved contrast
16:11, 30 August 2010Thumbnail for version as of 16:11, 30 August 20101,026 × 788 (49 KB)Ineuw (talk | contribs){{Information |Description = The Reis telephone transmitter of 1861 |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_23.djvu/562 |Date = 1883 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Pop

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