Dan Gutman

Uncle Fred Is a Knucklehead! - Dan Gutman

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Never Say Genius - The Genius Files Series, Book 2 - Dan Gutman

Dan Gutman

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The Genius Files - Books 1-4 - Dan Gutman

Unknown, Dan Gutman

License to Thrill - Book 5 - Dan Gutman

Unknown, Dan Gutman

My Weird School (1-15) + Special - Dan Gutman

Unknown, Dan Gutman

Flashback Four - Books 1-4 - Dan Gutman

Unknown, Dan Gutman