"Massachusetts, Marriages, 1841-1915," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/N468-Z77 : accessed 24 Nov 2014), Andrew Cnossen and Florence B Ryan, 20 Sep 1913; citing p 5 no 75, Newburyport, , Massachusetts, State Archives, Boston; FHL microfilm 2409945.