On May 14, 1804 The Corps of Discovery led by Captains Merriweather Lewis & William Clark began their journey across western North America, into completely unexplored and unmapped territory. At least that’s what is commonly thought. But was the west really unexplored?
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Book Sources
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"Mapping the West with Lewis & Clark" by Ralph E. Ehrenberg & Herman J. Viola
"Undaunted Courage" by Stephen Ambrose
RareMap.com Sources
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1718 Guillaume De L'Isle - [ Ссылка ]
1814 Lewis & Clark Map - [ Ссылка ]
1804 Aaron Arrowsmith - [ Ссылка ]
Aaron Arrowmith Maps - [ Ссылка ]
