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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1039759
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www.findagrave.com/cgi-bin/fg.cgi?page=cr&CRid=40573
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files.usgwarchives.net/oh/trumbull/cemeteries/doudfarm.txt (25 Jun 2008)
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www.viennahistory.org/cemetery-documentation-project (16 Dec 2012)
Home Page of Vienna Historical Society, Vienna, Ohio
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viennapedia.wikispaces.com/Doud Cemetery (5 Jan 2013)