"Michigan, Marriages, 1868-1925," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NQ3C-QGZ : accessed 02 May 2014), Martin Roos and Trentje Schindema Klock, 29 Jul 1895; citing Muskegon, Muskegon, Michigan, v 3 p 405 rn 2591, Department of Vital Records, Lansing; FHL microfilm 2342502.