Lewis

and Clark Expedition. In 1804-06, Meri wether Lewis and William Clark, under orders from President Jefferson, ascended the Mi ouri to its sources, cro ed the Rocky Mountains, struck the head waters of the Columbia River, floated down that river to its mouth and explored a great deal of the Oregon country. Their explorations covered nearly all the country south of the 49° parallel. Their company was composed of nine Kentuckians and fourteen soldiers. They started for the East March 2:, 1806, having explored nearly the whole of the Northwest regions. History, edited by Coues.