18 books • 3 series
Book #1: Arthur's Coloring Activity Book Part 1
Book #1: 10 World Wonders
Book #2: USA Destinations That Spark Our Fascinations
Book #3: Solar System Amazing Space Adventure
Book #4: Arthur goes Back to School
Book #6: Arthur's Cars, Trucks and Monster Machines
Book #1: Kids Books For Young Explorers
Book #2: Kids Books For Young Explorers Part 2