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On this day in Lewis & Clark history...

The morning brings a white frost as the Expedition proceeds 13 miles up the Missouri River. They see large round rocks as they pass the mouth of the Cannon Ball River. They meet two canoes with traders who had been robbed by the Mandan.

From the journals...

above the mouth of this River, in and at the foot of the Bluff, and in the water is a number of round Stones, resembling Shells and Cannon balls of Different Sises, and of excellent grit for Grindstons—

William Clark

Cannon Ball River rock

Very large round rock

The small Rose of the praries it rises from 12 to 14 Inches high does not vine

Meriwether Lewis

Prairie wild rose, Rosa arkansana

Small rose bush with ripe rose hips