Captain Underpants' tops list of most challenged books in 2013

Dav Pilkey's 'Captain Underpants' was the most challenged book of 2013 - Raw Story

Captain Underpants,' 'Part-Time Indian' top challenged books list

Captain Underpants' tops list of most challenged books in 2013

CPL Banned Books Week Someone doesn't want you to read these books.

Fighting for Captain Underpants

A Critical Look Back at the Books Banned from U.S. Libraries in the Past 5 Years — And Why, by Olivia Biggs

Banned books: The top 10 challenged titles of 2013 – in pictures, Books

Captain Underpants Banned

Captain Underpants - Wikipedia

press releases Banned Books Week

Captain Underpants,' 'Part-Time Indian' top challenged books list