Aunt Jane's Nieces On The Ranch by L. Frank Baum

Aunt Jane's Nieces On The Ranch sees the reappearance of Louise and Arthur Weldon after the birth of their first child, Jane. The family lives in California and hire a nurse, a local Mexican woman, much to Uncle John's disapproval. Racial tension is explored as a New York woman is brought in to care for the child. Meanwhile, the Mexican nurse, Inez, is certain the ranch is haunted. - Summary by Lynne Thompson