This listing is for a lot of four pop-up books from Derrydale Books, featuring the Wizard of Oz. The books were published in 1991 ( the books standing) and throne laying down in front is 1986. They are hardcover format, with each book measuring 9 1/2″ in height. The pop-up feature adds an interactive element to the story, making it engaging for readers of all ages. With a total of 6 pages per book, this set is a charming addition to any book collection, especially for fans of the Wizard of Oz series. Overall good condition, the binding on 2 of them is squashed a bit but all in tact.