"Minnesota, Death Index, 1908-2002," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/V44K-QWY : accessed 17 May 2014), Nina Lenora Steinberg, 11 Apr 1980; citing "Minnesota, Death Index, 1908-2002," Ancestry.com; Martin, Minnesota, record 2010925, certificate number 009678, Department of Health, Minneapolis.