found: Work cat.: Johnson, A. Grinnell and Sperry Glaciers, Glacier National Park, Montana, 1980:page 20 (Sperry Glacier; in Glacier National Park, Mont.; 9 miles south and slightly west of Grinnell Glacier and 25 miles south of the international boundary between the United States and Canada; occupies a cirque on the northwest slope of Gunsight Mountain on the Pacific side of the Continental Divide, which follows the crest of Gunsight Mountain to its highest point and then bends sharply to the southeast)
