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"Michigan, Death Certificates, 1921-1952," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KF3K-QM6 : accessed 06 Apr 2014), Simon S Volkema, 01 Jan 1927; citing Grand Rapids, Kent, Michigan, United States; 01375; FHL microfilm 1972819.
Category: Dutch immigrants to the United States