The World of Lewis and Clark (radio episode, with a focus on the aficionados who study every detail of the expedition)
Lewis and Clark National Historic Trail website, National Park Service
A PBS website relating to Ken Burns film “Lewis & Clark: The Journey of the Corps of Discovery.” (Includes sub-sections: Inside the Corps, Native Americans, the Archive, Into the Unknown, Interactive Trail Map, Classroom Resources, Living History, and a Forum with Ken Burns.)
Lewis and Clark: The National Bicentennial Edition, a website of the Missouri Historical Society. (Follows the Corps of Discovery from the banks of the Mississippi and Missouri Rivers through the human geography of western North America. A section For Educators contains lesson plans and an introduction to using primary sources.)
Follow in the Footsteps of Lewis & Clark, developed by the Sierra Club, emphasizes natural resources and the journals of Lewis and Clark.
Lewis and Clark and the Indian Country: 200 Years of American History, created by the Newberry Library in Chicago, explores how two histories, that of the United States and that of Indian peoples along the expedition route, came together two hundred years ago and how they remain intertwined today.
Discovering Lewis and Clark (sponsors: Lewis & Clark Fort Mandan Foundation, Lewis & Clark Trail Heritage Foundation, and the National Park Service).
Including sub-sections: the overall story, America in 1803, Preparations, Corps Members, Down the Ohio, Up the Missouri, Mandan Winter, To the Great Falls, Over the Rockies, Down the Columbia, At the Pacific, The Return Home, Geography, Natural History, Technology, America after 1806.
Go West Across America with Lewis and Clark, by National Geographic
Interactive website for children.
Lewis and Clark Trail Heritage Foundation, an organization that describes itself as “Keepers of the Story, Stewards of the Trail”—including the objective of “building partnerships with tribes.”
The Lewis and Clark Expedition and the USGS, U.S. Geological Survey. (From the website: “The Lewis and Clark Expedition was the first of many government surveys of natural resources in the American West. The U.S. Geological Survey (USGS) was established on March 3, 1879 in response to a report from the National Academy of Sciences, which had been asked by the Congress in 1878 to provide a plan for surveying and mapping the Territories of the United States that would secure the best possible results at the least possible cost. The USGS continues to serve the nation as an independent fact-finding agency that provides scientific understanding about natural-resource conditions, issues, and problems. Because of its origin in natural resource surveys and the similarity of the USGS mission to Thomas Jefferson’s charge to Meriwether Lewis, the USGS can be seen as the organizational successor to Lewis and Clark.”)