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Historical Topo #Maps Available from New TopoView 2.1 #geoscience

Phone displaying TopoVIew
The USGS TopoView enhancement, TopoView 2.1, brings historical topo maps to your fingertips in the popular open-source mapping platform. Users can compare historical maps with modern day maps to see how the landforms and regional names have changed over time. In addition to accessing the historical maps, additional upgrades to previous versions were made based on user feedback. 

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