Walls

Illustrated By: Arden Taylor

Part of the nonfiction Orca Timeline series, with photographs and illustrations throughout, this book explores why and how people have built walls all over the world throughout the course of human history.

Cities

Illustrated By: Suharu Ogawa

Part of the nonfiction Orca Timeline series for middle-grade readers, this illustrated book examines the past, present and future of cities around the world.