Map Showing Longitude Stations and Connections determined by means of the electric telegraph between 1846 and June 30, 1887. 137 longitude stations had been determined at that time. Map produced by C.A. Schott in January, 1889. 1887 Annual Report, figure 16.
Photo Category: Historical Cartography
Photo Date: 1887
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Added On | 20th October 2015 |
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