Cynthia O'Brien has written at least 4 books. Their most popular book is Magic School Bus Presents: Polar Animals: A Nonfiction Companion to the Original Magic School Bus Series with 1 save with an average rating of -⭐.
Series
1 released bookAuthored 11% of series
Nonfiction Companion to the Original Magic School Bus Series is a 9-book series first released in 2014 with contributions by Cynthia O'Brien, Tom Jackson, and 2 others.