National Geographic Kids Ultimate U.S. Road Trip Atlas: Maps, Games, Activities, and More for Hours of Backseat Fun
The Everything Kids' Travel Activity Book: Games to Play, Songs to Sing, Fun Stuff to Do - Guaranteed to Keep You Busy the Whole Ride!
Kid's Trip Diary: Kids! Write About Your Own Adventures and Experiences! (Kid's Travel series)
Awesome Adventures at the Smithsonian: The Official Kids Guide to the Smithsonian Institution