When Alan Brown published his well-received Haunted Places in the American South, a kind of seance swirled around him. Locals who knew ghost stories began haunting him with ghoulish reports from houses, schools, libraries, sanitariums, inns, battlefields, train depots, radio stations, and bridges. Following these leads, he uncovered even more ghost-ridden southern locales. In Kentucky's White Hall, the ghost of Cassius Clay's first...