From: https://commons.wikimedia.org/wiki/File:Red_telegr%C3%A1fica_de_Madrid.jpg Uploaded by Alvar.R.C. Last modified 4 days ago. 9 control points.
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File:Red telegráfica de Madrid.jpg
From: https://commons.wikimedia.org/wiki/File:Red_telegr%C3%A1fica_de_Madrid.jpg Uploaded by Alvar.R.C. Last modified 4 days ago. 9 control points. Links: Wikimedia Commons
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