What free newspapers are available for Genealogy?
Take a look at the Library of Congress' Chronicling America Website
This list will show you what newspapers have been digitized as well as the dates of the newspapers.
The newspapers are listed by state.
I did not see any newspapers digitized for Wisconsin?
I viewer on this website is easy to use even on a small screen. You can use the mouse wheel to zoom.
The search results are highlighted in pink in a full page thumbnail of the newspaper image.