Note 259 — OREGON MISSIONS AN OUTLINE SKETCH OF OREGON TERRITORY AND ITS MISSIONS (continued 3)

Lake Athabasca, in the northern portion of the territory of that name, is the outlet of Athabasca River, and extends 190 miles in length and from five to fifty-five in width. It discharges by Slave River into Great Slave Lake, thence through the Mackenzie into the Arctic Ocean. Fort Chippewyan, upon the shore of Lake Athabasca, was one of the earliest trading posts erected by the English in the Northwest. Thence Sir Alexander Mackenzie made his famous explorations (1789-93).—Ed.