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On this day in Lewis & Clark history...

This is the last full day Lewis and Clark spend at the Great Falls of the Ohio at Louisville, Kentucky. They make final preparations to depart for Fort Massac near the mouth of the Ohio River.

From the journals...

A sand island just below the falls, channel close to the island

Zadok Cramer
Snippet from a book used by Meriwether Lewis to help navigate the Ohio River

Quotation and picture from The Navigator: Or, the Trader's Useful Guide in Navigating the Monongehela, Allegheny, Ohio and Mississippi Rivers by Zadok Cramer, Fifth Edition, published in 1806. Lewis used an earlier edition to help him navigate and describe the journey down the Ohio River.