Adventure Into the Unknown - A webquest on the Lewis and Clark Expedition.
Carmen Sandiego Connection: Clark, William - Short biography based on Britannica.
Carmen Sandiego Connection: Lewis, Meriwether - Short biography based on Britannica.
Explorers of the Millenium: Lewis and Clark - Includes short biographies, sketches, timeline, and related links.
Go West Across America with Lewis and Clark - Introduces the main characters in the expedition. From NationalGeographic.com.
Letter from President Thomas Jefferson - Read the contents of Jefferson's letter of commission to Meriwether Lewis exactly as it was written.
Lewis and Clark - Presents an overview of the expedition complete with map. Also examines the questions surrounding Lewis's death.
Meriwether Lewis: A Portrait of an American Explorer and Hero - Detailed biography includes a look at Lewis's early years, his western exploration, his years as governor of the Louisiana Territory, and his mysterious death.
PBS Online: Lewis and Clark - Provides information on the explorers, expedition journals, trip timeline and maps, interviews with historical experts, an overview of Native American tribes, and classroom lessons.
The History of the Lewis and Clark Expedition - Expedition overview by the Lewis and Clark Trail Heritage Foundation.