| PBS Online: Lewis and Clark: Companion site to the Ken Burns film, 'Lewis and Clark: The Journey of the Corps of Discovery.' Information on the explorers, expedition journals, trip timeline and maps, interviews with historical experts, an overview of Native American tribes, and classroom lessons. |
| Discovering Lewis and Clark: Interactive workshop providing an overview of the journey of Lewis and Clark, including journal excerpts. |
| Following the Voyage of Discovery: A few historical FAQs, with an expedition map. |
| Jefferson's Letter: Read the contents of Jefferson's letter of commission to Meriwether Lewis exactly as it was written. |
| Jefferson's Secret Message Regarding the Lewis & Clark Expedition: Letter asking Congress for money to fund the expedition. |
| Lewis and Clark: National Geographic's expedition gallery, with references. |
| Lewis and Clark - Ohio River Chapter: The mission of the Lewis and Clark Trail Heritage Foundation is to honor the historic legacy of Lewis and Clark through research, education, preservation, promotion, and coordination. |
| Lewis and Clark and the Revealing of America: Library of Congress online exhibition of navigation maps. Includes a virtual tour format. |
| Lewis and Clark as Naturalists: Smithsonian Institution site on the natural history of the Lewis and Clark expedition. Includes pictures of plants and animals, journal writings, trail map, and lesson activities. |
| Lewis and Clark Expedition: Expedition paintings and summary, with an annotated subject bibliography. |
| Lewis and Clark North West: Short history of the expedition, with maps and trip planning information for following the trail. Includes directory of present-day businesses. |
| Lewis and Clark Trail: Historical account of the Corps of Discovery along the Lewis and Clark Trail. Includes an events calendar, trail properties, and trail treasures. |
| Lewis and Clark: A Journey: Full text of the first official account of the expedition. Includes maps and other resources. |
| Lewis and Clark: What Else Happened: Posting dates in history and explaining what Lewis and Clark were doing on that day and what other events were happening in the United States on that same day. |
| Medicine and Health on the Lewis and Clark Expedition: Information and online exhibits from the University of Virginia Health Sciences Library. |
| Meriwether Lewis: Virtualology Biography including research links, and illustrations. |
| National Geographic: Lewis and Clark: Includes an interactive journey log, maps, historical photos, drawings, a timeline, and details of their discoveries. |
| NPR : Hidden Treasures: Lewis and Clark's Map: In 1806, over a camp fire and food, Nez Perce Indian chiefs made a map for William Clark showing a short and safe journey through the Rockies. Harriet Baskas reports on this recently rediscovered rare Indian map. Part of the Hidden Treasures Radio Project. [5:42 Realaudio broadcast] |
| Pacific County Friends of Lewis and Clark: News, maps, and history of the Corps of Discovery's 18 days spent in Pacific County, Washington. |
| Smithsonian Magazine: Iron Will: Article about William Clark's later life. |
| Voyage of Rediscovery: Maps, pictures, and historic information. |
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