By Joseph H. Carter Sr. For The Oklahoman“American Pharoah: The Untold Story of the Triple Crown Winner's Legendary Rise” by Joe Drape (Hachette, 304 pages, in stores) and “The Boys From the Bushes” by Lou Dean (Oklahoma Heritage Association, 272 pages, in stores) For 500 years, horse racing was “the sport of kings,” but it became a favorite spectacle for everyone in 2015 when the thoroughbred American Pharoah thundered to a rare Triple Crown victory. In “American Pharoah,” Joe Drape explains how that equine magician was packaged to win two-minute performances.