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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1945424
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www.findagrave.com/cgi-bin/fg.cgi?page=cr&CRid=1407293
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files.usgwarchives.org/ia/butler/cemeteries/rivcem03.txt (7 May 2008)
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files.usgwarchives.org/ia/butler/cemeteries/rivcem01.txt (7 May 2008)
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files.usgwarchives.org/ia/butler/cemeteries/rivcem04.txt (7 May 2008)
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files.usgwarchives.org/ia/butler/cemeteries/rivcem02.txt (7 May 2008)
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files.usgwarchives.org/ia/butler/cemeteries/rivcem05.txt (7 May 2008)
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files.usgwarchives.org/ia/butler/cemeteries/rivcem06.txt (7 May 2008)