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On this day in Lewis & Clark history...

Lewis and Clark take the keelboat down the Ohio River. Near this date, they pass notable landmarks such as the Saline River and Battery Rock. They could also reach the Tradewater River by this date.

From the journals...

Saline river, left side, Opposite this river on the right shore, is a sand-bar, channel left shore.
Battery Rock, right shore

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.