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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:465263
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politicalgraveyard.com/geo/IA/PM.html#CEM (26 Mar 2009)
A database of political history and cemeteries, with brief biographical entries for 192,291 U.S. political figures, living and dead, from the 1700s to the present.
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www.epodunk.com/cgi-bin/localList.php?local=7596&locTGroup=Cemeteries&direction=down (5 Dec 2008)
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www.linkpendium.com/genealogy/USA/IA/Plymouth/ (5 Jan 2010)
The definitive directory to Genealogy > USA > Iowa > Plymouth County
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www.epodunk.com/cgi-bin/genInfo.php?locIndex=7596 (13 Nov 2008)
Plymouth County, Iowa IA, county profile, with sections on demographics, cemeteries, the economy, government, history and politics.
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www.findagrave.com/cgi-bin/fg.cgi?page=csr&CScnty=621 (25 Aug 2009)
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www.usgwarchives.net/ia/plymouth/cemetery.html (7 Oct 2009)
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iowaghosttowns.com/plymouthcounty.html (27 Jan 2010)
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en.wikipedia.org/wiki/Plymouth_County,_Iowa (28 Jul 2010)
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www.everynameindex.com/WoodburyCoIA.html (18 Sep 2012)
Compiled by Cathy L. O'Connor, 2012. Original text by A. Warner and Co., 1890-1891, reproduction by Unigraphic, Inc., 1974.