My dad was in charge of entertainment licensing in the city of Detroit back in the 60's/70's for the DPD. He had to enforce a lot of the half ass rules the State of Michigan had on the books and he used to tell me a lot of what those entailed. Movies, carnivals, bars, jukeboxes, book stores, topless joints, etc. I don't remember a lot of it, but bits and pieces have stuck.