Writer and historian Bernard DeVoto observed more than 50 years ago that a dismaying amount of American history has been written without regards to the Indians. Such disregard is glaring in many mainstream stories of Meriwether Lewis and William Clark. Lewis and Clark began preparing for their historic journey in 1803 and officially launched the expedition in May 1804. They traveled more than 7,400 miles before returning to St. Louis on September 23, 1806. Besides the two leaders, the permanent crew included 27 soldiers and four civilians--Clark's slave York, Sacagawea, her infant son Jean Baptiste Charbonneau, and her husband, Toussaint Charbonneau. The expedition crossed the homeland of more than 100 distinct Native American tribes. Dazzled by the notion of Manifest Destiny, American history tends to eulogize what Lewis and Clark "found" on their 7,400-mile journey. For Native Americans, the story instead is about what was lost--lives, land, languages and freedom. Outside of Native American circles, the expedition is almost universally called the "Corps of Discovery." However, Lewis and Clark did not "discover" anything. They showed up and mined the knowledge of Native Americans.