Captain Underpants Series - Complete 11 Book Collection - Adventures of Captain Underpants, Captain Underpants and the Preposterous Plight of the Purple Potty People, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 1

All 11 Captain Underpants books. Adventures of Captain Underpants, Captain Underpants and the Preposterous Plight of the Purple Potty People, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 1, Captain Underpants and the Attack of the Talking Toilets, Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies, Captain Underpants and the Perilous Plot of Professor Poopypants, Captain Underpants and Wrath of the Wicked Wedgie Woman, All New Captain Underpants Extra-Crunchy Book O Fun 2, All New Captain Underpants Extra Crunchy Book O' Fun, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 2 & Super Diaper Baby.