Westward Movement

1. Kit Carson
2. Pony Express
3. Crisis at Fort Sumter
   
   

Civil War

1. Civil War Photographs
2. The Dog

Lewis & Clark

1. The Journals of Lewis & Clark
2. Lewis and Clark (PBS Online)
3. Lewis & Clark Trail Heritage Foundation
4. Captain Meriwether Lewis
5. Sacagawea
6. Timeline

Harriet Tubman

1. The Underground Railroad - National Geographic
2. Harriet Tubman - Enchanted Learning
3. Harriet Tubman - PBS
4. Harriet Ross Tubman