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On this day in Lewis & Clark history...

Lewis and Clark take the keelboat down the Ohio River bound for Fort Massac. Near this date, they pass the Green River and perhaps stay at the town of Henderson.

From the journals...

Owing to a remarkable bend in the river, though the distance from the mouth of Green river to this place by water is twenty-five miles, yet by land it is only called eight.

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.