From robber barons to titanic CEOs, from the labor unrest of the 1880s to the mass layoffs of the 1990s, two American Gilded Ages--one in the early 1900s, another in the final years of the twentieth century--mirror each other in their laissez-faire excess and rampant social crises. Both eras have ignited the civic passions of investigative writers who have drafted diagnostic blueprints for urgently needed change. The compelling narratives of the...