Pick up any book on foxhunting in North America and you will find a reference to J. B. Thomas, Jr. Thomas was arguably the preeminent amateur sportsman of the Gilded Age. At one point, his kennel is believed to have contained over 1,000 foxhounds, and he and his huntsman, Charlie Carver, were invited to provide sport for rich foxhunting enthusiasts everywhere from New York and Virginia to the Rockefellers' personal sporting estate at Overhills, North...