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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1213665
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politicalgraveyard.com/geo/PA/CO.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=13769&locTGroup=Cemeteries&direction=down (17 Nov 2008)
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www.interment.net/us/pa/columbia.htm (16 May 2010)
Cemetery records of Columbia County, Pennsylvania
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www.linkpendium.com/genealogy/USA/PA/Columbia/ (16 Sep 2011)
Columbia County, Pennsylvania: Bibles, biographies, cemeteries, census, genealogy, newspapers, obituaries, vitals: births, marriages, deaths.
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www.epodunk.com/cgi-bin/genInfo.php?locIndex=13769 (22 Nov 2008)
Columbia County, Pennsylvania PA, 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=2259 (9 Sep 2009)
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www.usgwarchives.net/pa/columbp.html (1 Feb 2010)
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en.wikipedia.org/wiki/Columbia_County,_Pennsylvania (23 Jul 2010)