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Pack train being loaded for trip to headworks site, June 5, 1903
21. Pack train being loaded for trip to headworks site, June 5, 1903
Upper Washington State Principal Power Systems (Simplified)
22. Upper Washington State Principal Power Systems (Simplified)
Chronological History of the Puget Sound Power and Light Company and Predecessor Companies, 1885-1938
23. Chronological History of the Puget Sound Power and Light Company and Predecessor Companies, 1885-1938
Interior of the Cedar Falls Power House, October 17, 1912
24. Interior of the Cedar Falls Power House, October 17, 1912

Your City Light and Power
25. Your City Light and Power
Skagit Tour
26. Skagit Tour
Gatekeeper's cottage at the diversion dam, April 12, 1912
27. Gatekeeper's cottage at the diversion dam, April 12, 1912
Interior of large pipe, Masonry Dam, October 18, 1914
28. Interior of large pipe, Masonry Dam, October 18, 1914

Electron Diversion Dam excavation at the Puyallup River, November 15, 1903
29. Electron Diversion Dam excavation at the Puyallup River, November 15, 1903
Facts Derived From Official Sources: Water
30. Facts Derived From Official Sources: Water
Installation of steel Y-shaped tunnels underneath standpipes, October 15, 1924
31. Installation of steel Y-shaped tunnels underneath standpipes, October 15, 1924
Interior of powerhouse with fourth generating unit installed, February 26, 1925
32. Interior of powerhouse with fourth generating unit installed, February 26, 1925

City light, the municipal light and power system of Seattle, Washington
33. City light, the municipal light and power system of Seattle, Washington
Flume line trestle construction, June 9, 1903
34. Flume line trestle construction, June 9, 1903
Skagit Hydroelectric Project
35. Skagit Hydroelectric Project
Panorama of Camp No. 2 at proposed site of Masonry Dam, December 12, 1911
36. Panorama of Camp No. 2 at proposed site of Masonry Dam, December 12, 1911

Building embankment trestle for construction of Printz Basin, November 1, 1910
37. Building embankment trestle for construction of Printz Basin, November 1, 1910
Embankment construction using scrapers and steamrollers, northern Lake Tapps, July 26, 1910
38. Embankment construction using scrapers and steamrollers, northern Lake Tapps, July 26, 1910
Fourth penstock installed between standpipe and powerhouse, October 15, 1924
39. Fourth penstock installed between standpipe and powerhouse, October 15, 1924
Gate construction at intake near diversion dam, August 31, 1911
40. Gate construction at intake near diversion dam, August 31, 1911
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