Is green bay by Kenosha?
Kenosha, Wisconsin - home of my favorite orphan auto manufacturer, AMERICAN MOTORS!
Ya wanna know the best places to hunt? Old yards! They're the greatest! Nothing to it... walk up, introduce yourself, and explain to the homeowner what your intentions are. Try it, gets easier every time. Most times the owner could care less what you dig up. Just be neat, and leave the yard as nice as you found it. Good luck!