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File:PSM V44 D816 Military optical telegraphy.jpg

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Description Military optical telegraphy
Date between 1893 and 1894
date QS:P,+1893-00-00T00:00:00Z/8,P1319,+1893-00-00T00:00:00Z/9,P1326,+1894-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 44
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to grayscale, cropped whitespace. Modifications made by Ineuw. The original can be found here: Popular Science Monthly Volume 44.

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Date/TimeThumbnailDimensionsUserComment
current06:40, 29 January 2016Thumbnail for version as of 06:40, 29 January 20162,807 × 1,668 (1,022 KB)Ineuwadded frame
08:05, 10 February 2011Thumbnail for version as of 08:05, 10 February 20112,803 × 1,664 (1,005 KB)Ineuw{{Information |Description = Military optical telegraphy |Source = [http://www.archive.org/details/popularsciencemo44newy Popular Science Monthly Volume 44] |Date = 1893-1894 |Author = Unknown |Permission = {{PD-old}}
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