A new geographic information systems (GIS)-ready topographic-map-style template is now available from the USGS National Geospatial Program. The Topo TNM Style Template can be readily used with the ...
It just got way, way easier to search and browse the US Geological Survey’s collection of historical topographic maps, thanks to a new online map viewer. These maps—more than 178,000 of them—date back ...
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