File:1871 Map showing the telegraph lines in operation, under contract, and contemplated, to complete the circuit of the globe, by J. H. Colton & Co, G. W. & C. B. Colton & Co, from the Digital Commonwealth - commonwealth 7h149w171.jpg
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![File:1871 Map showing the telegraph lines in operation, under contract, and contemplated, to complete the circuit of the globe, by J. H. Colton & Co, G. W. & C. B. Colton & Co, from the Digital Commonwealth - commonwealth 7h149w171.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c2/1871_Map_showing_the_telegraph_lines_in_operation%2C_under_contract%2C_and_contemplated%2C_to_complete_the_circuit_of_the_globe%2C_by_J._H._Colton_%26_Co%2C_G._W._%26_C._B._Colton_%26_Co%2C_from_the_Digital_Commonwealth_-_commonwealth_7h149w171.jpg/800px-thumbnail.jpg?20211206175416)
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