Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction; Construction workers -- United States.
Workers going to work pass those coming off the job on Grand Coulee Dam
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.