William Frederick "Billy" Klair (1875-1937) was the undisputed czar of Lexington, Kentucky, for decades. As political boss in a mid-sized, southern city, he faced problems strikingly similar to those of large cities in the North. As he watched the city grow from a sleepy market town of 16,000 residents to a bustling, active urban center of over 50,000, Klair saw changes that altered not just Lexington but the nation and the world: urbanization, industrialization, and immigration. But Klair did not merely watch these changes; like other political bosses and social reformers, he actively...