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Category:Optical telegraphy

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[[Image:Optical Telegraph Old Prussian Optical Telegraph Attribution.jpg|thumb|right|A replica of the controls on a Prussian Optical Telegraph - Image by Super Bass]]
  
IEEE GHN Category [[Category:Telegraphy]]
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Revision as of 16:41, 15 February 2012

IEEE GHN Category

A replica of the controls on a Prussian Optical Telegraph - Image by Super Bass
A replica of the controls on a Prussian Optical Telegraph - Image by Super Bass

Pages in category "Optical telegraphy"

This category contains only the following page.

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Media in category "Optical telegraphy"

This category contains only the following file.