"Illinois, Cook County Marriages, 1871-1920," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:N7ZF-JQ3 : accessed 23 July 2015), Eizl Decker and Jennie Buwalda, 18 Jan 1916; citing Chicago, Cook, Illinois, 718136, Cook County Courthouse, Chicago; FHL microfilm 1,030,613.