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The Magic School Bus at the Waterworks is the first book in The Magic School Bus classic series books. Written by Joanna Cole and illustrated by Bruce Degen, it is a picture book and introduces most of the main characters of the series, including Ms. Frizzle, Arnold, Dorothy Ann, Ralphie (called "Ralph" in the book), Tim, Wanda and Liz as well as several students who did not appear in the TV serie... Wikipedia