Don't remember seeing any black locust around here, we've got too many honey locusts though. The thorns on those things will teach you to watch where you're going in the woods.
Somebody said something about locust sprouting in the post hole, Grandpa said that's how hedge/osage orange got started around here. They shipped in hedge from texas and some of the green posts sprouted. It and the cedars have taken over many of the pastures in this area.