Expeditions & surveys; Railroad surveys; Fort Okanogan (Wash.)
"Fort Okinakane (Okanogan) is an old and ruinous establishment of the Hudson Bay Company." "The character of the Columbia along the western border of the Spokane Plain and as far as Fort Okinakane (Okanogan) is described as follows:...
"The Columbia River at Fort Colville is about three hundred and fifty yards wide just above the Sometknu, or Kettle Falls. These consist of two pitches, one of fifteen feet and another below it of ten, and the river is narrowed to two hundred...
Expeditions & surveys; Railroad surveys; Canyons; Grand Coulee (Wash.)
"The Grand Coulee is about ten miles wide where it opens on the Columbia River at its northern end, which is a hundred feet above the water, and gradually widens toward the south; its walls, eight hundred feet high are formed of solid basaltic...
"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...
Architectural drawing of the McNary Dam, a 7365 foot hydroelectric dam that spans the Columbia River. McNary Dam is located one mile east of Umatilla, Oregon.
Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction; Construction equipment--Washington (State)--Grand Coulee Dam;
Demolition of a tower which carried the conveyor belt for aggregate across the Columbia River below the Grand Coulee Dam site.
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...