Note 218 — OREGON MISSIONS AN OUTLINE SKETCH OF OREGON TERRITORY AND ITS MISSIONS (continued 2)

These are Upper Columbia and Windermere lakes, the former 2,700 feet above sea level, and the ultimate source of the Columbia River. The river is navigable from Lake Windermere as far as Golden, where the Canadian Pacific Railway crosses, and steamers ply the course of about 160 miles. The passage from one lake to the other is possible only for canoes. This region was first explored by David Thompson in 1807.—Ed.