Article
PBS

Pbs: The Native Americans

For Students 9th - 10th
The Corps of Discovery came into contact with "Nearly 50 Native American tribes." This site from PBS discusses the tribes that had the most significant interactions with Lewis and Clark.
Lesson Plan
Library of Congress

Loc: Teachers: Journeys West

For Teachers 9th - 10th
A series of lessons utilizing primary texts, including narratives, photographs, and maps, through which learners explore the following question: "What motivated thousands of people to journey west during the 1800s?"