Marguerite Henry
Marguerite Henry ne Breithaupt was an American writer of childrens books. Her fiftynine books based on true stories of horses and other animals captivated entire generations. She won the annual Newbery Medal for one of her books about horses and she was a runnerup for two others. One of the latter, Misty of Chincoteague , was the basis for several sequels and for the 1961 movie Misty.
NA
Source: Wikipedia