Joanna Campbell is an American author best known for her contributions to children's and young adult literature, specifically in the genre of horse stories. She has created several popular series including "Thoroughbred," which chronicles the lives of young riders and their horses, fostering a love for equestrian sports among her readers. Her works often feature themes of friendship, perseverance, and the bond between horses and humans. Campbell has contributed to the genre with an extensive body of work that resonates with horse enthusiasts and young readers alike.