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161.
Constructing embankment at Wickersham Basin, January 4, 1911
162.
South side of powerhouse, nearly complete, September 21, 1925
163.
Layers of reinforcing bars at the tunnel intake, September 8, 1925
164.
Dam site and diversion tunnel entrance as viewed from bridge north of site, October 7, 1924
165.
First pour of concrete into dam form, February 11, 1925
166.
Bridge under construction over Cedar River at Masonry Dam, June 3, 1914
167.
Construction workers at tunnel entrance, ca. 1900
168.
Dam construction on the Snoqualmie River, ca. 1898
169.
Wrought-iron penstock parts being delivered by rail, 1900
170.
Transformer house and shop at the top of Snoqualmie Falls, ca. 1900
171.
Completed intake and transformer house, ca. 1900
172.
Intake, transformer house and elevator during construction of the power plant, ca. 1899
173.
Hydroelectric power plant on the Snoqualmie River above the falls with Mount Si in the background, 1908
174.
Interior of the transformer house soon after construction, ca. 1899
175.
Snoqulamie Falls and construction site, 1898
176.
Men standing beside diversion dam, Diablo Dam, May 9, 1928
177.
Ground-level view of Masonry Dam under construction, 1914
178.
Great Northern Railroad excursion train at Newhalem, June 7, 1924
179.
Buildings and construction supplies used for Diablo Dam Powerhouse, July 1, 1931
180.
Diablo Dam Powerhouse under construction, June 20, 1931
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