Most of the characters in this tale are from life, and some of the main events are historical, although the actual scenes and names are not given. Many men now living will remember Fighting Bill Kenna and the Horse Preacher, as well as the Fort Ryan races. These horse races are especially well known and have been described in print many times. I did not witness any of them myself, but listened on numerous occasions when they were described to me by eye-witnesses. My first knowledge of the secret try-out in Yellowbank Canyon was given to me years ago by Homer Davenport, the cartoonist, with permission to use the same.But all of these more or less historic events are secondary to the intent of illustrating the growth of a character, whose many rare gifts were mere destructive force until curbed and harmonized into the big, strong machine that did such noble work in the West during my early days on the Plains.