File:PSM V09 D092 Perforated telegraph paper.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:37, 13 July 2010 | 849 × 238 (16 KB) | Ineuw | {{Information |Description = Morse key and register |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_9.djvu/91 |Date = 1876 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|en|Wikisource|Ineuw |
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