From Sea to Shining Sea by Callista Gingrich illustrated by Susan Arciero*

"Part of the bestselling Ellis the Elephant series"
Travel with Ellis the Elephant and see how our country expands via Lewis and Clark's expedition.
Great two page map of the the United States in the early 1800's.
*Highly recommend.
Adorable illustrations.
Lots of resources in the back for further reading/exploration.