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401 - 425 of 1090 Items << < 12 13 14 15 16 17 18 19 20 21 > >>
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Shows a surveyor perched on the side of Black Canyon surveying the area preliminary to the construction of Hoover Dam. The Colorado River is visible below. On the back of the phot is hand-written "Rigger-rodman working with topographical survey...
1932-04-20
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Shows four construction workers sitting on the bank of the Colorado River in Black Canyon, watching a dynamite blast at the Hoover Dam site. The blast started the flow of water. Hand-written inscription (sentence in quotes in title) on back of...
1932-11-13
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View from a distance of Hoover Dam and the canyon. The upstream face, the power houses, and one of the portals to the diversion tunnels can be seen. There are buildings on the cofferdam and part of the Colorado River is visible.
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Aerial view showing the upstream face of Hoover Dam, the reservoir (Lake Mead), and the mountains and roads surrounding the site.
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Downstream view of the face of Hoover Dam and two of the power houses. Intake towers can be seen above the dam and the reservoir (Lake Mead) can be seen in the upper right of the photo. This photo is actually a postcard.
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View of the Hoover Dam construction site from downstream in Black Canyon. The peaks of the intake towers are seen behind the dam face. Construction on the power houses is seen at the base of the dam face. Scaffolding is still present on the dam face.
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Shows construction taking place on the Arizona intake towers and on the top of the dam. Catwalks, temporary buildings, the Colorado River, and construction equipment including derrick cranes are visible.
1935-01-28
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Placing of the high pressure valves in one of the diversion tunnels. There are two construction workers in the picture, and the tunnel is illuminated with electric lights.
1934-12-19
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Aerial view of Lake Mead, the Colorado River, Hoover Dam, and the mountains in the area. View is looking upsteam and the Nevada power house is visible.
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Night view of Hoover Dam during construction. The power houses, concrete forms, and upstream face of the dam are illuminated by electric lighting.
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View of the intake towers and crest of Hoover Dam, taken from the side, looking down. Cars are parked on the road which crosses the dam and the roads and mountains are visible in the background.
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Shows the Arizona spillway, intake towers, and reservoir (Lake Mead). Cars are visible on the road leading to the dam and some are parked next to the road.
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Shows the intake towers and the downstream face of the dam. The reservoir (Lake Mead) is starting to fill. There is a car parked on a scenic overlook, facing the dam.
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Aerial view of Hoover Dam looking towards the downstream side of the dam. The outlet works on both sides of the dam are spewing water into the canyon. Lake Mead is beginning to fill. both spillways and roads are also visible.
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Harold Ickes, Secretary of the Interior, is speaking at a lectern at the dedication of Hoover Dam.
1935-09-30
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Completed dam and intake towers. The reservoir (Lake Mead) has begun to fill. There is a power boat on the lake headed toward the dam.
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shows the upstream face of the dam, the intake towers, and construction equipment. There is a little water in the reservoir (Lake Mead). The Arizona spillway is also visible.
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View from the top of the dam showing water streaming from the outlet works of the valve house on the Arizona side. Also shows the Colorado River, the valve house on the Nevada side, the tops of the Arizona and Nevada power houses, and a road along...
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Color transparency showing Hoover Dam lit up at night. The top of the dam with the intake towers, is visible.
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View from above the spillway bridge showing water spilling over. A bus and cars are parked on the bridge and there are cars parked at a scenic overlook next to the water.
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Color transparency of the downstream face of Hoover Dam. Water is spewing from the outlet works and a rainbow is visible in the water spray.
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Shows the intake towers and the face of Hoover Dam. Lake Mead (reservoir)is beginning to fill.
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Color transparency of the interior of Hoover Dam showing the giant generators. A man standing next to a generator gives perspective as to its size.
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Construction on the Arizona power house. A portion of the dam face is seen in the upper left. A construction worker stands on a dump truck in front of the power house and another worker is seen sitting on part of a cableway in the lower center of...
1935-03-26
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Close-up of construction on the central section and a portion of the Nevada side of the power house, directly below the dam face. Concrete pouring forms and other construction equipment are seen around the structures.
1935-05-27
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