"Michigan, Death Certificates, 1921-1952," index, FamilySearch (https://familysearch.org/ark:/61903/1:1:KF73-8VX : accessed 15 June 2015), Henry A Lanning, 19 May 1948; citing Holland, Ottawa, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,973,075.