Welcome to the Hamb. I'm also in Illinois, restoring a '51 Merc. You should post some pictures of your car in your album, or in this thread. I can point you in the right direction to get parts - click on my build thread in my signature, and I have included many links there that will help you locate Mercury parts.
...Welcome aboard from southern Wisconsin.....got some nice wheels and a bike.....maybe post some pictures and tell us more about yourselfs.....until then enjoy