Start by searching the Green Bay Press Gazette!:
Can't find a substantial article on your topic in the GB Press Gazette? Additional Wisconsin newspapers are available in US Newsstream. Add the word Wisconsin to your search. On the results page, scroll down to the bottom of the left-hand column. Click on Location and then click on Wisconsin.
To expand your search further, go to the Library Search, a tool that allows you to search a majority of the library's physical and electronic resources using one simple search box. Just add the word Wisconsin to the search, like this:
Still can't find a source you like? Try a customized Google search. Did you know that you can limit your results to resources on university or government websites? Just add site:.edu or site:.gov to your search!