Mississippi River
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From Urantia Wiki, the encyclopedia of The Urantia Book
Also: Mississippi valley.
The Great Lakes once emptied through the Mississippi River, carving out their present-day form over thirty-seven thousand years. 61:7.10
In the Urantia Book
> https://en.wikipedia.org/wiki/Mississippi_River
Where it appears
Mississippi River is linked in 3 paragraphs of the text.