Dateline: May. 14, 2006
Interactive Journey log about Lewis and Clark from National Geographic -- FREE...very cool!
http://www.nationalgeographic.com/lewisandclark/
When Thomas Jefferson dispatched Lewis and Clark to find a water route across North America and explore the uncharted West, he expected they'd encounter woolly mammoths, erupting volcanoes, and a mountain of pure salt. What they found was no less surprising. See it all on our journey: journal entries, historical photos, drawings, and more.