| nationalgeographic.com | National Geographic: Lewis & Clark |
| lewisandclarkeducationcenter.com | Lewis and Clark Education Center |
| lcarchive.org | Lewis and Clark Internet Archive |
| lewisandclarkontheohio.org | Lewis and Clark - Ohio River Chapter |
| tripod.com | Lewis and Clark Expedition |
| pbs.org | PBS Online: Lewis and Clark |
| nps.gov | Lewis and Clark National Historic Trail |
| lewisandclarktrailbybicycle.com | The Lewis and Clark Trail |
| lewisandclark200.org | Lewis and Clark Bicentennial Council |
| lewisandclark.org | Lewis and Clark Trail Heritage Foundation |
United States , Colorado , Englewood