"Michigan Death Certificates, 1921-1952," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KF32-TYM : accessed 24 August 2015), Harm P Kremer, 01 Jun 1936; citing Grand Rapids, Kent, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,972,824.