^"Michigan, Deaths and Burials, 1800-1995," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FHWR-X4G : accessed 12 May 2012), Raiment Pierson in entry for George Allen Pierson, 1867.
^"Michigan, Deaths and Burials, 1800-1995," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FHWL-FGS : accessed 12 May 2012), Raymond Pierson in entry for August N. Pierson, 1871.