In 1906, James Uncle Jimmy Owens, at the request of Teddy Roosevelt, moved to the remote North Rim of the Grand Canyon to help control the mountain lion population. He earned a reputation as a legendary hunter and guided hunts and tours for the rich and famous. Passionate about wildlife, Uncle Jimmy started out as a quiet, unassuming cowboy on a cattle ranch in Texas before taking a job as a buffalo warden in Yellowstone and meeting the future president,...