Based on the birth date, there were likely notices in the local German papers for your John Haas, married to a Louise?
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, compiler/editor
Milwaukee Wis.
gary.rebholz@gmail.comIndexing Milwaukee's German newspapers continuously since 2007 ... it's about German-American culture, not data.