"Minnesota Death Index, 1908-2002," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V44R-F4F : accessed 1 June 2016), Earl John Torgerson, 17 Dec 1979; from "Minnesota Death Index, 1908-2002," database, Ancestry (http://www.ancestry.com : 2001); citing Clearwater, Minnesota, record 1999473, certificate number 029411, Minnesota Department of Health, Minneapolis.