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151. Some desert watering places in southeastern California and southwestern Nevada
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152. Section of a concrete-pouring jumbo standing outside of a diversion tunnel
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153. Construction on the Nevada power house
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154. Construction on the Arizona power house
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155. Interior of penstock tunnel -- Hoover Dam construction site
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156. Close-up of formwork in the Arizona power house
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157. Construction on the Nevada power house
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158. Construction view of the valve house and portal area of Hoover Dam
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159. Downstream view of Hoover Dam construction
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160. View of Hoover Dam construction from the top of the dam
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161. Interior of diversion tunnel during Hoover Dam construction
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162. Looking into the Arizona spillway raise.
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163. Diversion of the Colorado River into diversion tunnel no. 1 as the gate on diversion...
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164. Downstream view of Hoover Dam construction site
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165. Construction on Hoover Dam and the power houses looking upstream from the lower portals road
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166. Hoover Dam construction site, looking upstream from the lower portals road
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167. Construction on Hoover Dam and the power houses looking upstream from the lower portals road
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168. Aerial view of Hoover Dam, looking upstream on the Colorado River
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169. Hoover Dam -- downstream face
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170. View of Hoover Dam from the downstream side of the Colorado River
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171. Hoover Dam -- upstream side
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172. Hoover Dam -- upstream side
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173. Upstream view of Black Canyon during early stage of Hoover Dam construction
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174. Aerial view of Hoover Dam
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175. Hoover Dam -- outlet works
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176. Outlet works -- Hoover Dam
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177. Water discharging from the Nevada and Arizona outlet works into the Colorado River
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178. View of water discharging from the Nevada and Arizona outlet works into the Colorado River
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179. Bridge construction near Hoover Dam site
 

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