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File:PSM V14 D145 The edison speaker.jpg

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Description The Edison speaker
Date between 1878 and 1879
date QS:P,+1878-00-00T00:00:00Z/8,P1319,+1878-00-00T00:00:00Z/9,P1326,+1879-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 14
Author Unknown authorUnknown author
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Date/TimeThumbnailDimensionsUserComment
current02:16, 27 January 2011Thumbnail for version as of 02:16, 27 January 20111,704 × 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 2011Thumbnail for version as of 02:13, 27 January 20111,704 × 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 2010Thumbnail for version as of 15:31, 5 August 20101,704 × 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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