In the years 1804, 1805, and 1806, two men commanded an expedition which explored the wilderness that stretched from the mouth of the Missouri River to where the Columbia enters the Pacific, and dedicated to civilization a new empire. Their names were Meriwether Lewis and William Clark. This book relates that adventure from its inception through its completion as well as the effect the expedition had upon the history of the United States. (Summary from the text and Roger Melin)

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