The Emerald City of Oz — L. Frank Baum

The sixth installment of L. Frank Baum's Land of Oz series, this novel follows Dorothy Gale along with her Aunt and Uncle as they move permanently to Oz. Because of the financial stress of rebuilding the farm, Dorothy's family is facing mountains of debt. Upon hearing of her Aunt and Uncle's situations, Dorothy contacts Princess Ozma and arranges for her and her family to live in Oz and be forever safe and at peace.