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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1948959
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www.findagrave.com/cgi-bin/fg.cgi?page=cr&CRid=793270
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www.sharylscabin.com/Allamakee/cemetery/Thompson.htm (17 Jul 2012)
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www.sharylscabin.com/Allamakee/cemetery/cemnotes2.htm#Thompson Corners (25 Mar 2013)
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iowagravestones.org/cemetery_list.php?CID=3&cName=Thompson Corner (1 May 2013)