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WikiPedia: Drengman Aaker http://politicalstrangenames.blogspot.com/2013/11/... http://vesterheim.org/collections/civil-war-databa... https://www.findagrave.com/cgi-bin/fg.cgi?page=gr&... https://www.legis.iowa.gov/legislators/legislator/... https://web.archive.org/web/20160624020410/http://...