Down The Long HillsAfter the massacre Hardy and Betty Sue were left with only a horse and a knife with which to face the long battle against the wilderness. A seven year old boy and a three year old girl, stranded on the limitless prairie. They were up against starvation, marauding Indians, savage outlaws, and wild animals. They were mighty stubborn, but the odds were against them and their luck was about to run out., ISBN13: 9780553062137 ISBN10: 0553062131 Material