This colorful picture book describes all the duties and responsibilities of the park rangers who oversee and protect the most treasured places in America. Full color.

Catherine Stier is the author of more than 20 children's books including the Science Makes it Work picture book series and the Kirkus star-reviewed A Dog's Day chapter book series. She holds a master's degree in reading and literacy and has served as a magazine writer, newspaper columnist, and writing instructor. Stier resides in San Antonio, Texas.