Based on unprecedented access to Ranger archives, Lone Star Lawmen chronicles one hundred years of high adventure as told by one of the nation's most respected Western historians. Highlighting the gradual evolution of this celebrated force, Robert M. Utley reveals how the outlaw-pursuing horseback riders of yesteryear became a modern law enforcement agency combating urban crime in Texas's big cities, assisted by the latest advances in forensic science. Modernization didn't mean losing their toughness and independent spirit, however, and Utley predicts how the Rangers will continue to bring justice to the West in the twenty-first century.