“Get your head into the clouds with Aerial Geology.” —The New York Times Book Review Aerial Geology is an up-in-the-sky exploration of North America’s 1

A beautifully rendered reference guide to the Great Plains portion of the famous expedition through the American West highlights the explorer's remarkable encou

Particularly valuable for Ronda's inclusion of pertinent background information about the various tribes and for his ethnological analysis. An appendix also pla

Lewis and Clark's Expedition from the Mississippi River to the Pacific Ocean was the first governmental exploration of the "Great West." The history of this und