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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:277588
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en.wikipedia.org/wiki/St._Helena,_California (23 Aug 2010)
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en.wikipedia.org/wiki/Saint_Helena,_California (24 Jul 2010)
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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:2411758