From the Morgan Sweeney Photograph Collection (PH-00228). Hoover Dam. [Working on Hoover Dam] June 3, 1955. Stamp on verso: "P45-301-10534-A Official Photograph United States Department of the Interior Bureau of Reclamation If reproduced credit U.S. Bureau of Reclamation Photo by F. S. Finch JUN 3 1955."
From the Morgan Sweeney Photograph Collection (PH-00228). The powerhouse is the U-shaped structure at the toe of the dam. As the river is the state line, the left wing of the powerhouse (containing 8 generating units) is in Nevada, while the right wing of the powerhouse (containing 9 generating units) is in Arizona. The central section of the powerplant houses control rooms, work shops, and offices. The reservoir above the dam is named Lake Mead.
From the Morgan Sweeney Photograph Collection (PH-00228). Car load of transformer oil on cableway skip, to be used in transformer serving N-8 to be seen in background. Transformer 3-phase, manufactured in Switzerland in August 22, 1961.