Left Brain Kids 
Big Book of Trucks and Trailers! Big Rigs Edition for Kids (Monster Trucks) – Children’s Cars & Trucks 

Isn’t it amazing how boats speak to each other? They don’t use words like we do! Instead, they use maritime flags and other signals. Help your little ones to understand what these signals mean by going the pages of this book. Learning what they mean is an important aspect of expanding your child’s level of communication. Secure a copy today!