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On this day in Lewis & Clark history...

Clark turns back towards the Marias River mouth and camps on the Teton River near present Fort Benton, Montana. Lewis continues exploring the Marias River. At the main camp, the men make leather and catch several catfish.

I discovered a lofty single mountain which appeard to be at a great distance, perhaps 80 or more miles    it boar N. 52 W.    from it's conic figure I called it tower Mountain.

Meriwether Lewis

Sweetgrass Hills

Range of mountains with two conical peaks

it is astonishing what a quantity of water it takes to saturate the soil of this country, the earth of the plains are now opened in large crivices in many places and yet looks like a rich loam from the entrance of this Creek (which I called Lark C.)

Meriwether Lewis

Montana soil

Dry, cracked Montana ground

saw a flock of the mountain cock, or a large species of heath hen with a long pointed tail which the Indians informed us were common to the Rockey Mountains

Meriwether Lewis

Sage grouse, Centrocercus urophasianus

Male grouse with tail fanned

Photo created by the U.S. National Park Service.

In these bottoms I saw the stalks of a plant resembling flax in every particular.

Patrick Gass

Lewis's blue flax, Linum lewisii

Plant with small blue petals