Note 225 — OREGON MISSIONS AN OUTLINE SKETCH OF OREGON TERRITORY AND ITS MISSIONS (continued 2)
Reading edition
De Smet is not sufficiently precise in his topography to make it certain by which pass he crossed the Rocky Mountain divide. Probably it was that over which Sir George Simpson made his way to the westward in 1841, now known as Simpson Pass (elevation 6,884 feet). It comes out in the neighborhood of Banff on the Canadian Pacific Railway, in the valley of Bow River, a tributary of the South Saskatchewan. See Simpson, Narrative, i, pp. 118-121.—Ed.