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results 1-20 of 971 item(s)  page 1 of 49 : ( <<  1  2  3  4  5  6  7  8  9  10  >> ) :: previous : next
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Construction site of the Gorge High Dam showing the old 1950 masonry dam to the right, August 2, 1956
1. Construction site of the Gorge High Dam showing the old 1950 masonry dam to the right, August 2, 1956
Construction of Gorge Powerhouse, showing generating units 21 and 22 (formerly units 1 and 2), January
2. Construction of Gorge Powerhouse, showing generating units 21 and 22 (formerly units 1 and 2), January 12, 1923
Steam shovel used in construction of the railroad between Rockport and Newhalem, August 11, 1920
3. Steam shovel used in construction of the railroad between Rockport and Newhalem, August 11, 1920
Steam shovel at rocky curve overlooking the Skagit River, used for building the railroad between Rockport
4. Steam shovel at rocky curve overlooking the Skagit River, used for building the railroad between Rockport and Newhalem, August 11, 1920
Tourists visiting Diablo Dam, ca. 1933
5. Tourists visiting Diablo Dam, ca. 1933
Harnischfeger bridge crane being placed in position during construction of the Diablo Powerhouse, May
6. Harnischfeger bridge crane being placed in position during construction of the Diablo Powerhouse, May 1935
Diablo Powerhouse interior showing metal reinforcement (rebar) which will hold up the generator pedestals,
7. Diablo Powerhouse interior showing metal reinforcement (rebar) which will hold up the generator pedestals, ca. 1935
Laying cement in the switchyard, where the transformers will be located, for the Diablo Powerhouse, May
8. Laying cement in the switchyard, where the transformers will be located, for the Diablo Powerhouse, May 1935
Relief valve piston, Diablo Powerhouse, April 1936
9. Relief valve piston, Diablo Powerhouse, April 1936
Diablo Powerhouse interior, showing construction of the generator, August 1936
10. Diablo Powerhouse interior, showing construction of the generator, August 1936
Setting the turbine runner in place, Diablo Powerhouse interior, May 5, 1936
11. Setting the turbine runner in place, Diablo Powerhouse interior, May 5, 1936
Setting a section of the generator stator in place, Diablo Powerhouse interior, May 28, 1936
12. Setting a section of the generator stator in place, Diablo Powerhouse interior, May 28, 1936
Conduit in floor slab of Diablo Powerhouse, April 1936
13. Conduit in floor slab of Diablo Powerhouse, April 1936
Turbine shaft and runner, Diablo Powerhouse, Skagit River, April 28, 1936
14. Turbine shaft and runner, Diablo Powerhouse, Skagit River, April 28, 1936
Diablo Powerhouse interior with generator scroll cases in place, Skagit River, October 28,1935
15. Diablo Powerhouse interior with generator scroll cases in place, Skagit River, October 28,1935
Diablo Powerhouse and camp, Reflector Bar, Skagit River, October 1, 1935
16. Diablo Powerhouse and camp, Reflector Bar, Skagit River, October 1, 1935
Gorge Powerhouse showing Mount Ross to the north, ca. 1930
17. Gorge Powerhouse showing Mount Ross to the north, ca. 1930
Railroad trestle construction between the powerhouse and dam sites, June 30, 1924
18. Railroad trestle construction between the powerhouse and dam sites, June 30, 1924
Gas-powered trolley, known as the Toonerville Trolley, running on railroad tracks from Rockport to Newhalem,
19. Gas-powered trolley, known as the Toonerville Trolley, running on railroad tracks from Rockport to Newhalem, providing tours of the Gorge Dam construction site, July 17, 1921
Territorial University Young Naturalists Building, n.d.
20. Territorial University Young Naturalists Building, n.d.
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