"Michigan Obituaries, 1820-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK7W-LQGY : accessed 28 July 2015), Ray Veeneman in entry for Mr Earl N Doornbos, 1951; citing various offices and archives, Michigan.
"Michigan Death Certificates, 1921-1952," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KF3P-Y9P : accessed 28 July 2015), Earl Doornbos, 21 May 1951; citing Grand Rapids, Kent, Michigan, United States, Division for Vital Records and Health Statistics, Lansing; FHL microfilm 1,972,832.
