The sun hung gold and red above the snow-tipped ramparts of the Colorado Rockies. On a high bluff across the Purgatory River a group of Indians sat their mustangs watching the slow, winding course of a railroad train climbing toward the foothills, fearful of this clattering, whistling monster on wheels that might spell doom to the red man. Had they not seen train after train loaded with buffalo hides steam eastward across the plains?