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Uploaded on Feb 8, 2012
Mac Barnett appears at the 2011 National Book Festival.
Speaker Biography: Mac Barnett is the author of several picture books, including "Mustache!," "Oh No! Or How My Science Project Destroyed the World" and "Billy Twitters and His Blue Whale Problem." He also writes the Brixton Brothers series of mysteries. Although he often neglects shaving, he has never worn a mustache.