1855 Hughes teleprinter.
Previously:
Electromechanical teleprinter - GIF
US radio frequency allocation chart - photo
Barbed wire telephone lines - photos
1855 Hughes teleprinter.
Previously:
Electromechanical teleprinter - GIF
US radio frequency allocation chart - photo
Barbed wire telephone lines - photos
Scotsman Hosie (Aug 4, 2020)
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