Exploration party moving up the Sun River valley "in the direction of the pass between the Crown Butte and the Rattlers, prominent landmarks west of Sun River and visible at a great distance." Plate XXIX.
"This valley for the most part is wide and open." There are "spurs separating it from the Hell-Gate Valley on the south," and "separate on the north the various tributaries flowing into the Blackfoot River." Plate LXII.
Approximately "fifty miles long and fifteen miles wide," Big Hole Prairie "is hemmed in by high mountains on every side except the southeast where Wisdom River passes out from it." Plate XLIX.
"The altitude of this butte, as determined by barometric measurement, is 281.8 feet above the level of the Shyenne (Cheyenne) River." Named for "an engagement between some half-breeds and Sioux, in which one of the former, by the...
The train of the Red River hunters consisting "of 824 carts, about 1,200 animals, and 1,300 persons, men, women, and children." The encampment is formed by making "a circular or square yard of the carts, placed side by side with the...
Expeditions & surveys; Railroad surveys; Columbia River; Cascade Falls
The Cascade rapids, sometimes referred to as the Cascade Falls. This is an area of rapids in the Columbia River where travelers by boat along the river were forced to either portage boats and supplies or pull boats up with ropes. Plate XLV.
Chemakane Mission named for a nearby spring, was "occupied by Messrs. Walker and Eel; but, in 1849, in consequence of the Cayuse difficulties, it was abandoned." "The site of the mission is five miles from the Spokane River, in an...
"The mission is located upon a hill overlooking extensive prairies stretching to the east and west toward the Coeur D'Alene Mountains and the Columbia River. About a hundred acres of the eastern prairie adjoining the Mission are enclosed and...