Missing numbers 41, 40, 32, 29, 27, 22, 14 2 and 3 .This rare collection of Magic Tree House books by Mary Pope Osborne is a custom bundle of paperback chapter books in English. The books in the series are perfect for children and young adults aged 4-12, with an emphasis on action and adventure. With a missing 9 books to complete the set, this collection is sure to captivate young readers with its magical stories and engaging plot twists. Perfect for young readers who enjoy fantasy and adventure, this book lot is a must-have for any bookshelf.