101. Aerial view of Hoover Dam
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102. Aerial view of Hoover Dam and the surrounding area
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103. Construction of Hoover Dam
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104. Downsteam face of Hoover Dam
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105. Concrete pouring forms and construction on the intake towers at Hoover Dam
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106. Water from the Colorado River
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107. Start of construction of an intake tower
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108. Aerial view of Hoover Dam from Lookout Point on the Nevada side
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109. Hoover Dam under construction
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110. Spillway on Arizona side of Hoover Dam
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111. Blasting in the walls of Black Canyon for intake tower construction
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112. Hoover Dam cooling tower and refrigeration plant during construction
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113. Hoover Dam construction -- cooling tower and refrigeration plant
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114. View of a power house at the Hoover Dam construction site
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115. Downsteam view of Hoover Dam, showing power house construction
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116. Aerial view of the Hoover Dam construction site looking upstream on the Colorado River
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117. Aerial view of the Hoover Dam construction site looking downstream from the Arizona side
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118. Close-up of no. 3 Arizona intake tower, showing the cylinder gates being placed.
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119. Commemoration of the pouring of the second millionth cubic yard of concrete in Hoover Dam
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120. Aerial view of construction on the top of Hoover Dam
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121. Aerial view of the Hoover Dam construction site viewed from downstream on the Colorado River
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122. Construction on the Nevada and Arizona power houses in the downstream cofferdam below Hoover Dam
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123. Aerial view of the Hoover Dam construction site looking upstream on the Colorado River
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124. Looking upstream toward Hoover Dam, during construction
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125. Night photo of Hoover Dam, during construction
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126. Upstream face of Hoover Dam, during construction
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127. View of Hoover Dam during construction
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128. Final pour in the slot, Hoover Dam
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129. Building of intake tower, Hoover Dam site
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130. Hoover Dam, looking downstream
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131. Hoover Dam construction, looking down on top
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132. Looking downstream into the Nevada spillway.
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133. Hoover Dam, looking upstream from Lookout Point
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134. Third millionth cubic yard of concrete being lowered to Boulder Dam
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135. Top of Hoover Dam during construction
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136. Hoover Dam during construction
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137. Spillway and Hoover Dam during construction
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138. Looking across the top of Hoover Dam during construction
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139. Hoover Dam construction -- spillway
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140. Construction on the Nevada spillway
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141. Night construction -- intake tower at Hoover Dam
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142. Hoover Dam -- at night
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143. View of the Hoover Dam construction site looking downstream on the Colorado River
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144. Construction on the roadway on top of Hoover Dam
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145. Aerial view of Hoover Dam, looking downstream from the Arizona side of Black Canyon
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146. Aerial view of Hoover Dam, looking upstream on the Colorado River
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147. Blueprint layout of Hoover Dam.
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148. Hoover Dam -- downstream face
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149. Hoover Dam -- downstream face
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150. Hoover Dam -- upstream face
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