File:PSM V14 D145 The edison speaker.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:16, 27 January 2011 | ![]() | 1,704 × 805 (160 KB) | Ineuw | {{Information |Description = The Edison speaker |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_14.djvu/145 |Date = 1878-1879 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Science Mon |
02:13, 27 January 2011 | ![]() | 1,704 × 805 (160 KB) | Ineuw | {{Information |Description = The Edison speaker |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_14.djvu/145 |Date = 1878-1879 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Science Mon | |
15:31, 5 August 2010 | ![]() | 1,704 × 871 (165 KB) | Ineuw | {{Information |Description = The Edison speaker |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_14.djvu/145 |Date = 1878-1879 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Science Mon |
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