GIS Lounge: Over 120 Years of Mapping History Online

By Michael Bates on July 10, 2012 6:04 PM | Permalink | TrackBacks (0)

GIS Lounge: Over 120 Years of Mapping History Online

"The USGS Historical Topographic Map Collection currently makes over 98,000 maps dating as far back as 1884 available to the public. The maps are available in GeoPDF format and can be downloaded for free from the USGS store."

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