Captain Underpants Box Set of 13 Books

13 paperback books: The Adventures of Captain Underpants, The Adventures of Ook and Gluk, Kung-Fu Cavemen from the Future, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy Part 2: The Revenge of the Ridiculous Robo-Boogers, Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers, Captain Underpants® and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space (and the Subsequent Assault of the Equally Evil Lunchroom Zombie Nerds) Super Diaper Baby 2: The Invasion of the Potty Snatchers Captain Underpants® and the Perilous Plot of Professor Poopypants, Captain Underpants® and the Attack of the Talking Toilets, Captain Underpants® and the Preposterous Plight of the Purple Potty People, Captain Underpants and the Terrifying Return of Tippy Tinkletrousers, Captain Underpants and the Wrath of the Wicked Wedgie Woman, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy Part 1: The Night of the Nasty Nostril Nuggets, The Adventures of Super Diaper Baby