"Michigan, Marriages, 1868-1925," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/N32K-GM4 : accessed 23 December 2014), Lewis Huls and Grace Bouwkamp, 30 Jan 1912; citing Grand Rapids, Kent, Michigan, v 3 p 144 rn 8976, Department of Vital Records, Lansing; FHL microfilm 2,342,697.