Uncle John's Presents the Ultimate Challenge Trivia Quiz

Uncle John's Bathroom Reader Plunges into History Again

Uncle John's Bathroom Reader Plunges into the Universe

Uncle John's Bathroom Reader: WISE UP!

Uncle John's Weird Weird World Epic

Uncle John's Bathroom Reader: Zipper Accidents

Uncle John's Facts to Go: Mad Science

Uncle John's Bathroom Reader: Attack of the Factoids

Uncle John's Facts to Go: International Affairs

Uncle John's Facts to Go: History Makers

Uncle John's Bathroom Reader: Germophobia

Uncle John's Bathroom Reader Tales to Inspire

Uncle John's Bathroom Reader: History's Lists

Uncle John's Bathroom Reader Salutes the Armed Forces

Uncle John's Bathroom Reader Weird Canada

Uncle John's Bathroom Reader Plunges into Canada, Eh

Uncle John's Plunges into Canada: Illustrated Edition

Uncle John's Bathroom Reader Plunges Into History

Uncle John's Bathroom Reader Plunges Into Music