... Campbell spent two unproductive years in the Dease Lake area, trying to break the Russian American Fur Company's hold on the interior fur trade. An agreement between the H.B.C. and R.A.F.C. in 1839 freed Campbell to turn his attentions northward. Thomas Simpson and Peter Warren Dease had, in 1837, crossed a major new river, which they named Colville, during their excursion along the arctic coast. Campbell, who had learned from the natives of the "Toutcho" or "Great Water" to the north, was directed to push to the north in search of the headwaters of this new river. He completed the exploration in two stages, reaching the Pelly River in 1840 and descending that stream to its junction with the Lewes (Yukon) River three years later. Govern...