It's a good basic overview, although the name's rarely intended as an insult nowadays. Just don't call someone a Piney unless you are one, too.
I've spent most of my life in "Jews", "Indians" and "Russians, Polacks and Toxic Fumes" (referring to the map on the previous page), but I did a number of engineering jobs and site cleanups in or near the Pinelands, and used to know my way around there.