"How can I go about getting more info from these German newspapers?"
The answer remains old-fashioned library research (although I've done my best to make that easier: a temporary terminal placed in a library at my expense from March 2010-Nov. 2012, was removed due to local hackers 8-(. The local German newspapers also published family photos, detailed descriptions and guest lists of wedding parties, detailed accounts of funeral services and burials, engagement announcements, missing immigrant relatives, etc.
You're free to contact me directly for more information.
"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 to do it!