Travels to the source of the Missouri River, and across the American continent to the Pacific Ocean. Performed by order of the government of the United States, in the years, 1804, 1805, and 1806 / By Captains Lewis and Clarke. Published from the official report, and illustrated by a map of the route, and other maps.

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Travels to the source of the Missouri River, and across the American continent to the Pacific Ocean. Performed by order of the government of the United States, in the years, 1804, 1805, and 1806 / By Captains Lewis and Clarke. Published from the official report, and illustrated by a map of the route, and other maps. Public Domain Mark. Source: Wellcome Collection.