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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:465259
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politicalgraveyard.com/geo/IA/OB.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.findagrave.com/cgi-bin/fg.cgi?page=csr&CScnty=617 (10 Sep 2009)
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www.epodunk.com/cgi-bin/localList.php?local=7561&locTGroup=Cemeteries&direction=down (17 Feb 2008)
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www.linkpendium.com/genealogy/USA/IA/OBrien/ (17 Dec 2011)
O'Brien County, Iowa: Bibles, biographies, cemeteries, census, genealogy, newspapers, obituaries, vitals: births, marriages, deaths.
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www.interment.net/us/ia/obrien.htm (16 May 2010)
Cemetery records of O'Brien County, Iowa
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www.usgwarchives.net/ia/obrien/cemetery.html (6 Oct 2009)
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iowaghosttowns.com/obriencounty.html (27 Jan 2010)
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www.epodunk.com/cgi-bin/genInfo.php?locIndex=7561 (13 Nov 2008)
O'Brien County, Iowa IA, county profile, with sections on demographics, cemeteries, the economy, government, history and politics.
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en.wikipedia.org/wiki/O'Brien_County,_Iowa (6 Aug 2010)
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www.everynameindex.com/ObrienCoIA.html (18 Sep 2012)
Compiled by Cathy L. O'Connor, 2011. Original text by Hon. L. E. Peck and Hon. O. H. Montzheimer for O'Brien County and Hon. William J. Miller for Osceola County, published by B. F. Bowen and Co., 1914, reproduction by Unigraphic, Inc., 1974.