During the first half of the twentieth century, the Peoria State Hospital was the premiere mental health facility of its day. Dr. George Zeller instituted the eight-hour workday for his staff, removed patient restraints, and made the asylum into a model for the care of the mentally ill. Today, there are only a few buildings of the hospital left. Some of them are still in use, others are inhabited only by ghosts. Our guide to these ghosts -- and the...