In many ways, this is a better book than My Friend, Flicka. But it hasn't quite the emotional pull of that book, nor does it hold to the line so clearly. Where one was definitely a horse and boy story, this one is also a horse and boy story, but it is also a story of marriage which nearly goes on the rooks, of interplay of personalities within a family, likes and unlikes clashing or in sympathy, and it is a detailed close-up of the factors that go into the understanding of horses, the inknowing which makes for that understanding. Thunderhead is a white colt, born to Flicka, a colt which embodies all of Ken's aspirations to be owner of a great racer. His color is a shock -- Ken's secret of his breeding must come out -- and come out it does, with unanticipated results. Then the story follows the first three years of the colt's life, set against a stormy background not only of his own conflicting claims, but of Neil and Rob near disaster and a breaking point, of Ken, learning the hard way that he cannot have all on which he sets his mind. Even the end is a concession -- Ken, realizing that his chosen way is not to be, finds how to give Thunderhead a chance to live the life for which Fate destined him, to take up the challenge of his outlaw grandfather's dominant strain. Good reading. Should have a plus sale for boys.