"Michigan, Marriages, 1868-1925," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/N3GS-P9N : accessed 14 March 2015), Issac J. Bytwerk and Kate Veenstra, 26 Jun 1914; citing Muskegon, Muskegon, Michigan, v 4 p 41-66 rn 13868, Department of Vital Records, Lansing; FHL microfilm 2,342,706.