"Michigan Death Certificates, 1921-1952," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KFHZ-T4T : 13 March 2018), John P Bertram, 10 Nov 1929; citing Westphalia, Clinton, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,973,220.
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