Final answer:
Laura Ingalls Wilder wrote the book 'Little House in the Big Woods' in her 60's, about a girl living in Wisconsin, which started the famous 'Little House' series.
Step-by-step explanation:
When Laura was in her 60's, she wrote a book titled Little House in the Big Woods, which is the first installment of the Little House series and it is about a girl living in Wisconsin. This series of books, including the well-known Little House on the Prairie, started in 1932.
Laura Ingalls Wilder's works have become classics of children's literature and they portray her childhood experiences in the American Midwest. The slight dig at Rose possibly refers to the complex relationship Laura had with her daughter, Rose Wilder Lane, who herself was involved in the writing and editing of Laura's books. The stories Laura wrote are cherished across the world, often used in college classrooms, and have sparked discussions about American history and frontier life.