ClapperZapper,

You may be interested in this broadcast that ran on NPR in April of this year.

Keeping up the Mother Tongue
http://www.npr.org/templates/story/story.php?storyId=102537759

NPR News - All things Considered.
In Rural Wisconsin, German Reigned for Decades.
http://www.npr.org/templates/story/story.php?storyId=102523977

Podcast of the above
http://www.npr.org/templates/player/medi...amp;m=102618927

Also this thread on Ancestory.com (mentioned above) that was started by Robert Chambers, there are some interesting bits of information:
http://boards.ancestry.families.aol.com/...bay/968/mb.ashx

Do not be too concerned with the city / county boundaries. They are political and can vary greatly over the course of a 100+ years, as can street names and numbering schemes.

There is still a question as to who Flues apprenticed to. This may be buried in those church records.

Pete