Note 186 — OREGON MISSIONS AN OUTLINE SKETCH OF OREGON TERRITORY AND ITS MISSIONS
Reading edition
The site of the first mission of St. Ignatius, called by De Smet the Bay of the Kalispels, was on the east bank of Clark’s Fork, in latitude about 48° 20′ north, longitude 117° 10′ west, in the present Stevens County, Washington, not far from the town of Usk. The mission was maintained at this point until 1854, when, the spot proving unsuitable from frequent overflows, a site was chosen in western Montana on the present Flathead Reservation, whence the mission was transferred and where it has since been maintained. See L. B. Palladino, Indian and White in the Northwest, pp. 68-79.—Ed.