The most pressing question facing the small and mid-sized cities of America's industrial heartland is how to reinvent themselves. Once-thriving communities in the Northeastern and Midwestern U. S. have decayed sharply as the high-wage manufacturing jobs that provided the foundation for their prosperity disappeared. A few larger cities had the resources to adjust, but most smaller places that relied on factory work have struggled to do so. Unless and until they find new economic roles for t...