"Minnesota Death Index, 1908-2002," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:V4HH-83S : 4 December 2014), Lamberdus Cornelis De Kriek, 30 May 1931; from "Minnesota Death Index, 1908-2002," database,
Ancestry (http://www.ancestry.com : 2001); citing Rock, Minnesota, record 592058, certificate number 012844, Minnesota Department of Health, Minneapolis.