USGS Quad Map Overlay for Google Earth

United States Geological Survey (USGS) created topographic maps of the United States (1879 to 1992).  This web application overlay's the applicable 7.5 minute (1:24,000 scale) quad map.  Open the USGS_Quad_Overlay.kml file in Google Earth.  It will dynamically query based on the current view of Google Earth and show the applicable Quad Map Image(s).

Google Earth needs be be installed ( before successfully using the links below.  Images courtesy of USGS ( via MSR Maps ( 

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