A local resource under construction since your posting is called "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). There are about 130 Raabe Rabe and Raab entries or references in the current data. These cover the years c. 1860-1935 and related surnames include Goehringer Schumann Froemming Aelen Weik Betke Desfeld Muenstermann Jahr Zitscher Falkner Goehring Netzow Jansen Gruhl Jordan Lenneker.
gary.rebholz@gmail.com, originator/compiler/editor, Milwaukee Wis.
Indexing Milwaukee's German newspapers continuously since 2007... helping family researchers collect evidence contemporary with their historic German-American families.