Lewis and Clark on the Jefferson River: Ascending the Missouri Headwaters
Jefferson and the Louisiana Purchase – America in Class – resources for history & literature teachers from the National Humanities Center
Lewis & Clark: The Journey of the Corps of Discovery: An Illustrated History: Duncan, Dayton, Burns, Ken: 9780375706523: : Books
The Louisiana Purchase and its exploration (article)
Spanish Opposition - Discover Lewis & Clark
Jefferson's Instructions to Meriwether Lewis
Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West: 8601422176339: Ambrose, Stephen: Books
Spanish Opposition - Discover Lewis & Clark
Spanish Opposition - Discover Lewis & Clark
Lewis and Clark's Race Against Spain