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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1216108
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en.wikipedia.org/wiki/East_Penn_Township,_Pennsylvania (9 Aug 2010)
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en.wikipedia.org/wiki/East_Penn_Township,_Carbon_County,_Pennsylvania
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freepages.genealogy.rootsweb.ancestry.com/~carbdat/m&h/epenn.htm (15 Sep 2010)