There were relatively brief death notices in the German papers for Pastor and "Frau Pastorin" Geyer. There may eventually be a wedding anniversary article (with their biographies) indexed too. There was some sort of probate work processed for Pastor Geyer so there may be some interesting documents and a signature found there.
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ... because _somebody_ had too!