The lecturer at the Government's free grandstand and vista house displays a topographic model of the damsite showing conditions prior to any construction. The object in the river is the old Seaton Ferry."(Note: This and following five pictures were taken in the model display room at the Government's west vista house. During 1938 an estimated total of 233,000 visitors heard the lectures and saw the models at the Government's vista houses.)
Lecture aid for guided tours and engineering lectures related to the construction of the Grand Coulee Dam.