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On this day in Lewis & Clark history...

Lewis and a few men take the keelboat down the Ohio River. By the end of the day, they will be within one day of Louisville, Kentucky.

From the journals...

Twelve Mile island, channel same side

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.