Expeditions & surveys; Railroad surveys; Clark Fork River (Mont.); Flathead Lake (Mont.)
The Clark Fork River, "being much cut up by coulees, have the appearance of that on the Upper Missouri. The soil is principally a light yellow clay; the stream here is two hundred yards wide, swift and deep, sparsely timbered with pine and...
A conical mound near the center of a beautiful prairie called the "Deer Lodge". The mound stands "about thirty feet high, around the base of which are innumerable springs of hot water. On top of the mound a spring three feet in...
Expeditions & surveys; Railroad surveys; Waterfalls; Cliffs; Great Falls (Mont.)
The cliffs at the falls are about "one hundred fifty to three hundred feet deep with a steep descent to within fifty feet of the bottom, and for the remaining distance perpendicular walls of red sandstone." "Above the falls the banks...
Expeditions & surveys; Railroad surveys; Fort Vancouver (Wash.)
Drawing of Fort Vancouver which was the administrative headquarters and main supply depot for the Hudson's Bay Company's fur trading operations in the immense Columbia Department. Under the leadership of John McLoughlin, the fort became the center...
Lieutenant Mullan's party leaving the Bitter Root Valley and heading "down the river to the Lou-Lou Fork, which is fifteen yards wide and two feet deep at its mouth. Its valley is five hundred yards wide, and the mountains on each side are...
Expeditions & surveys; Railroad surveys; Hellgate River (Mont.); Floods
Lieutenant Mullan and party crossing the Hell-Gate River. This river being flooded, "his whole party and property were nearly lost in using a raft unmanageable in the swift current." Plate LVI.
"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.