The crossing of the Bitterroot Mountains by the Lewis and Clark expedition, 1940.

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The crossing of the Bitterroot Mountains by the Lewis and Clark expedition, 1940.

Typewritten copy of a research report by Koch on his on-site identification of the route taken by the Lewis and Clark Expedition from western Montana to the Clearwater River in Idaho.

0.1 c.f. (1 folder)

Related Entities

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Lewis and Clark Expedition (1804-1806)

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After elected president, Thomas Jefferson wanted a direct and practicable water communication across the continent and US sovereignty over the land occupied by the many different Indian tribes along the Missouri River. In 1803, Jefferson commissioned the Corps of Discovery and named Army Captain Meriwether Lewis its leader. Lewis selected William Clark as second in command. The Corps of Discovery departed from Camp Dubois (Illinois) on May 14, 1804, and met up with Lewis in St. Charles, Missour...

Koch, Elers, 1880-1954

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