Everyone harbors a dream. Perhaps it is to leave the bills behind, see what is over the next hill, or even seek for adventure. Frank Heath, the author of "Forty Million Hoof Beats" did all that and more. A former cavalryman during the First World War, Heath not only knew about horses, but more importantly he understood the rigors involved in undertaking a great equestrian journey. That is why he took a deep breath before announcing to the world that he was going to ride to all 48 states within the continental United States. Most people would spend vast amounts of time and money to acquire a...