Book excerpt: Faces of the Frontier showcases more than 120 photographic portraits of leaders, statesmen, soldiers, laborers, activists, criminals, and others, all posed before the cameras that made their way to nearly every mining shanty-town and frontier outpost on the prairie. Drawing primarily on the collection of the National Portrait Gallery, this book depicts many of the people who helped transform the West between the end of the Mexican War and passage of the Indian Citizenship Act.