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The Purpose                To get information upon the unexplored country extending from the interior of                           present Missouri to the mouth of the Columbia River in present Washington.

The Start                  At St. Louis, Monday, May 14, 1804.

The Finish                 At St. Louis, Tuesday, September 23, 1806.

Time Consumed              Two years, four months, and nine days.

Distance Travelled         To the mouth of the Columbia: 4134 miles. Back to                           St. Louis: 3555 miles. Counting side trips: 8000 miles, total.

Methods Employed           Boats, horses and afoot.

The Route                  Up the Missouri River to its sources in present Montana; across the Bitter Root Mountains into present Idaho; by                           way of the Clearwater River, the Snake River and the Columbia River to the Pacific Ocean.

The Party Out of St. Louis Forty-five.

The Party Who Went Through Thirty-three: the two captains, twenty-three American soldiers, five French-Canadian and French-Indian boatmen and interpreters, one negro servant, one Indian woman guide, and one baby.

Deaths                     One.

Seriously Injured          One.