The 39-Story Treehouse (The Treehouse Books, Bk. 3)

Andy and Terry live in a 39-story treehouse. (It used to be 26 stories, but they added some stuff.) It has the world's highest trampoline, a chocolate waterfall, a baby-dinosaur petting zoo, an active (non-erupting) volcano, a boxing elephant called The Trunkinator, the world's scariest roller coaster, and a level that is so new and so secret that Terry hasn't even finished it yet!

Who knows what fun stories and crazy adventures lie ahead? After all, life is never boring in a 39-story treehouse!