About Sanborn maps
Historical fire insurance maps, called Sanborn Maps, help researchers discover what companies or factories operated many decades ago in regions across the country.
http://www.wtsp.com/video/1571333547001/1/About-Sanborn-maps
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About Sanborn maps
Historical fire insurance maps, called Sanborn Maps, help researchers discover what companies or factories operated many decades ago in regions across the country.
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02:46