“......hardwood tree farm, including significant acreage in black walnut trees.....” is fairly common throughout Indiana. Black walnut timber is one of your higher priced varieties so people plant a few acres to hand down to their Great Great Great grandchildren as a sort of patrimony. I’m presuming you didn’t know that. But it’s very difficult to make an immediate profit on the trees ~ not in this lifetime nor the next either. We had a bunch of them going and it took about 40 years before the first tree had a nut and then it wasn’t fertile and didn’t take.