Appropriately nicknamed "the Pathfinder," John C. Frémont blazed many trails across the Wild West. Frémont carved paths over the Rocky and Sierra Nevada mountains. He led expeditions through uncharted wilderness and provided the first useful maps of California and Oregon. However, Frémont did more than explore. As a soldier, he helped California fight for its independence and served as one of the state's first senators. Authors William R. Sanford and Carl R. Green reveal the remarkable life of the Pathfinder.