This book, The Bobbsey Twins "at Windmill Cottage" #31, is a classic children's adventure story written by Laura Lee Hope. It features the beloved Bobbsey family and their exciting exploits at Windmill Cottage. The book is a hardcover edition with a dust jacket, and it is an original copy published by Grosset & Dunlap. The language of the book is English, making it accessible to a wide range of readers. This book is a great addition to any collection of antiquarian and collectible books.