Spanish Opposition - Discover Lewis & Clark
For the Want of an Interpreter - Lewis and Clark - Corps of Discovery - U.S. Army Center of Military History
3 New Spain & New France
What Were Spanish and British Reactions To the Expedition? - Lewis & Clark Online Exhibit - State Historical Society of North Dakota
The Lewis and Clark Expedition Day by Moulton, Gary E.
SURV-2010 Spanish Exploration of the Old Spanish Trail
November 7, 1805 Lewis and Clark – Today in History
Lewis and Clark's Race Against Spain
Lewis and Clark National Historic Trail
Road to Oregon (1805) – American History Told By Contemporaries
The Louisiana Purchase of 1803, History, Importance & Conflicts - Video & Lesson Transcript
Lewis and Clark's Race Against Spain