On July 18, 1882, a lieutenant in the US Army named Henry Hubbard Pierce received a letter from Brigadier General Nelson A. Miles, who was commanding the Department of the Columbia, which included the Washington Territory. This communication outlined Special Order no. 97, which charged Lt. Pierce with carrying out an expedition of the North Cascades. The primary goal of the expedition was to map his route of exploration, starting from Fort Colville on the east side of the mountain range to his terminus in Puget Sound by way of Lake Chelan and the Skagit River. As the instructions outlined, his “reconnaissance is to obtain such knowledge of the country and its occupants as may be valuable at present or in the future to the military service.”
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