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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1573968
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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1584133
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en.wikipedia.org/wiki/Sharon,_Walworth_County,_Wisconsin (29 Jul 2010)
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en.wikipedia.org/wiki/Sharon,_Wisconsin (20 Jul 2010)