Help designing currency for wisconsin?

In my print design class, we were assigned a US state, and told to design three bank notes (dollar bills) for our state as if they were their on country…

Well, I got stuck with Wisconsin, (no offense all you cheese-head flutherites) and I’m having a bit of trouble with what to do… I’ve done some research and found out that Wisconsin is well known for agricultural production (dairy, corn, grain) also they are home to tons of paper mills and quite a few beer companies. As for famous people, I’ve narrowed it down to Orson Wells, Georgia O’Keeffe, and Frank Lloyd Wright…

If you guys know anything about Wisconsin, or can think of any related subject matter or concept that might look cool on a bill, please, let me know!