In the spring of 1921, Texas oil baron William Waggoner offered thoroughbred breeder and racing veteran Samuel D. Riddle $500,000 for his peerless, 4 year old chestnut colt, Man o’ War. Riddle politely turned him down. When on the very next day the oil man raised his offer to $1 million, Riddle was said to have replied, “Mr Waggoner, many men can have a million dollars, but only one can have Man o’ War. I’m not interested in parting with him.” Determined to own the greatest thoroughbred the racing world had ever known, an exasperated Waggoner exclaimed, “Come, Mr. Riddle,...