(11 Oct 2019) In collaboration with the US Geological Survey (USGS), Esri recently updated the online USGS historical topographic map collection with over 1,700 new maps. Esri’s USGS topographic map collection now contains 177,061 historical quadrangle maps dating from 1882 to 2006. Previously available only as printed lithographic copies, high-resolution images of these maps are freely available online…
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