Magic Tree House Boxed Set: Books 1-28,Magic Tree House Boxed Set: Books 1-28,[Magic Tree House Boxed Set, Books 1-28] [By: Osborne, Mary Pope] [September, 2008]: unknown author: Amazon.com: Books,The Magic Tree House Series: Complete Box Set Books #1-28 NEW (off),Magic Tree House Books 25-28 Boxed Set: 9780399549564: Osborne, Mary Pope: Books - Amazon.com