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101.
Dam site and diversion tunnel entrance as viewed from bridge north of site, October 7, 1924
102.
Construction of a railroad trestle across a northern arm of Lake Tapps, June 1, 1910
103.
First pour of concrete into dam form, February 11, 1925
104.
Partially completed dam with temporary forms for sluiceways on the left, February 16, 1925
105.
Railroad yard at top of incline near powerhouse, May 31, 1910
106.
Snoqulamie Power Plant workers' quarters, office and shop building, and transformer house, Snoqualmie River abover the falls, 1910
107.
Hydroelectric plant intake, office, transformer house, and workers' cottages, on the Snoqualmie River above the falls, 1912
108.
Making the cut for the flume near the diversion dam headworks, June 16, 1910
109.
Bird's-eye view of Ruby Inn and Skagit River, near proposed site of Ruby Dam, June 18, 1919
110.
Incline railway under construction, Reflector Bar, January 1928
111.
Fourth standpipe completed, with tailrace and Stuck River visible in distance to the west, February 26, 1925
112.
Construction operations above Diablo Dam, May 7, 1928
113.
Flood water submerging diversion dam, Diablo Dam, May 20, 1928
114.
Pouring concrete for Diablo Dam construction, with man hanging from crane lines, using guidewire to direct concrete funnel, October 3, 1928
115.
Sand and gravel storage bins under construction, Diablo Dam, March 16, 1928
116.
Gravel grading equipment at Reflector Bar, with incline railway in background, March 1928
117.
Completed southern addition to powerhouse, February 26, 1925
118.
Diversion dam, looking upstream, Diablo Dam, April 25, 1928
119.
Reflector Bar on the Skagit River used to supply sand and gravel for construction of the Diablo Dam, March 1928
120.
Installation of fourth water wheel turbine and generator in powerhouse, October 15, 1924
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