Eleanor Rosenfeld Estes is the author. Here is an excerpt from the enotes site on the author, please click the link below for more info:
Eleanor Rosenfeld Estes was born on May 9, 1906, in West Haven, Connecticut, to Louis and Caroline Gewecke Rosenfeld. Her father died when Estes was a child, and her mother worked as a dressmaker. Estes has credited her parents with instilling in her a love of books. She has cited as another important early influence her mother's skill at dramatic storytelling and her extensive repertoire of folktales, songs, and anecdotes. Estes always wanted to be a writer, although she never set out to write for young adults.