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On this day in Lewis & Clark history...

Lewis travels down the Marias River joining the main party at the Missouri at 5pm. The men believe that the north fork (the Marias) is the Missouri River while the Captains believe that the south fork is the correct river.

From the journals...

The whole of my party to a man except myself were fully peswaided that this river was the Missouri, but being fully of opinion that it was neither the main stream or that which it would be advisable for us to take, I determined to give it a name and in honour of Miss Maria W—d. called it Maria's River.

Meriwether Lewis

Marias River

River flowing through sagebrush and cottonwood bottoms