Map of "the Hill" sought

[Monty]

Anyone else remember Hill Street Blues? I'm currently (and nostalgically) watching episodes of that great show. For some reason or reasons unknown, it's occurred to me that it might be handy to have a map of the city or as much of a map as can be pieced together from various clues given during the series. I tried searching the Internet but got nothing.

Has anyone seen a map of the series' city? If not, perhaps we can figure it out here.