FamilySearch (https://familysearch.org/ark:/61903/1:1:KF3Z-P25 : 13 March 2018), Peter Nanninga, 12 Nov 1923; citing Portage, Kalamazoo, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,972,777. - Peter Nanninga, "Michigan Death Certificates, 1921-1952" » Quellen » Familienstammbaum familie Steenhuis » Genealogie Online"> FamilySearch (https://familysearch.org/ark:/61903/1:1:KF3Z-P25 : 13 March 2018), Peter Nanninga, 12 Nov 1923; citing Portage, Kalamazoo, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,972,777. - Peter Nanninga, "Michigan Death Certificates, 1921-1952" » Quellen » Familienstammbaum familie Steenhuis » Genealogie Online">
"Michigan Death Certificates, 1921-1952," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KF3Z-P25 : 13 March 2018), Peter Nanninga, 12 Nov 1923; citing Portage, Kalamazoo, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,972,777. - Peter Nanninga, "Michigan Death Certificates, 1921-1952"