Magic Tree House Boxed Set, Books 1-28,Magic Tree House Classic Collection 1-28 Books Set,Amazon.com: Magic Tree House Boxed Set, Books 1-28: 9780375849916: Osborne, Mary Pope: Books,Magic Tree House Boxed Set, Books 1-28] [By: Osborne, Mary Pope] [September, 2008]: unknown author: Amazon.com: Books,Amazon.com: A Library of Magic Tree House Collection 28 Books Box Set: 8711419218352: unknown author