Crooks, the stablehand on the ranch, owns two very important books:
1. A copy of the California Civil Code: This book represents his desire for justice and his longing to be treated fairly. He often quotes from the code to remind others of their legal obligations and to assert his own rights.
2. A tattered copy of a "horse doctor book": This book reflects his love and care for animals. It's a practical guide that allows him to tend to the horses, which is his only real companionship on the ranch.
These books are more than just objects; they are symbols of Crooks' inner world and his hopes for a better life.