Dorothea Dix was almost forty years old when she discovered that people, especially poor people, with mental illness were "confined in cages, closets, cellars, stalls, pens . chained, naked, beaten with rods, and lashed into obedience." Outraged by this knowledge, Dix led a forty-year crusade for the humane treatment of people with mental illness. Year after year, she traveled thousands of miles by stagecoach, boats, horseback, and railroad to investigate...