Book excerpt: Take in the sights of Chicago's forgotten byways, including a cow trail through a downtown hotel. Pause reflectively at the cemetery in a working scrapyard and the church built without a nail. Stop by the one-time homes of Walt Disney, Joe Louis, Hillary Clinton and Al Capone. Along the way, greet forgotten Chicago notables like the vice president who won a Nobel Prize and wrote a number-one pop hit. From the shortest street to the oldest house, John R. Schmidt visits the sites of Chicago's neglected history.