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On this day in Lewis & Clark history...

The keelboat is loaded and taken for a test run a few miles up the Mississippi River. At the confluence with the Missouri River, Clark practices taking compass bearings.

From the journals...

after Loading the Boat maned her with 20 oares & went the middle of the river & up the Mississippi a fiew miles

William Clark

Keelboat with sail

Large wooden keel boat with full sail

This photo is provided as a service by the U.S. Army Center of Military History.