ST. LOUIS — As you drive through the rural areas of Millstadt, Ill., barns line the farmland communities. In them, you’ll find horses, tack rooms, maybe an occasional mouse scurrying along. But ...

Thirty-five years ago, fields of hay, oats, barley, wheat and corn surrounded this farmstead in South Whitehall Township. Today, those fields are gone. In their place are the usual developments. Tract ...