Thompson, David
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
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Religious Studies, Education, Psychology, History, Literature, Philosophy, Entire Library
...traveled its length; he then explored the Kootenai, Pend Oreille, and Clark Fork river basins. In 1810, prevented by the Piegan from using Howse Pass, he went north to the head of the Athabasca River and across the mountains and explored all of the Columbia...