I forget how it came up on our show today, but if you look at a map of Minnesota and Wisconsin, you can see a profile of a Native American with a feather or headdress looking off to the northwest.
Here it is. I didn't do a GREAT job of outlining it, so try to find it on a map where it looks much more realistic.
Or this? My daughter Allison pointed this out when she was little. These states look like a person wearing Minnesota as a hat. Again, I didn't do the best job outlining it so look on a map for a better view of it.