Pg.51 #2919 Boulder Dam, looking upstream from Lookout Point. Nov. 2nd, 1934. Pg.51 #2885 Top of Boulder Dam, looking toward the Arizona side. Arizona Spillway and Intake Towers in the background. Oct. 17th, 1934. Pg.51 #2883 Looking toward the Arizona side, showing top of Boulder Dam, with Arizona Spillway and Intake Towers in background. Oct. 17th, 1934.

Pg.54 #2918 Upper portal trashrack for Diversion Tunnel no.1, on the Nevada side. Oct. 30th, 1934. Pg.54 #2983 Looking downstream into No.4 Raise, showing close-up of portal forms. Oct. 25th, 1934. Pg.54 #2916 Looking upstream in No.2 Diversion Tunnel, showing the concrete pipe line from the pumpcrete gun to the upstream plug. Oct. 30th. 1934. Pg.54 #2900 Looking downstream into the Nevada Spillway. Oct. 25th, 1934.

Pg.61 #3042 Telephoto view, looking downstream into the Arizona Spillway, showing the bridge under construction. Jan. 28th, 1935. Pg.61 #3020 Arizona Valve House, from the Government Cableway. Jan. 16th, 1935. Pg.61 #3044 Looking downstream into the Nevada Spillway. Jan. 29, 1935. Pg.61 #3032 Looking upstream toward Boulder Dam, showing excavation of the downstream cofferdam. Jan. 28th, 1935.

Pg.62 #3025 Nevada Power House, from the downstream cofferdam. Jan. 28th, 1935. Pg.62 #3059 Diversion Tunnel No.1 Trashrack and counterweight assembly just prior to the diverting of the Colorado river into the tunnel. Feb. 1st, 1935. Pg.62 #3026 Arizona Power House, from the downstream cofferdam. Jan. 28th, 1935. Pg.62 #3054 Diversion of the Colorado River into Diversion Tunnel No.1 as the Gate on Diversion Tunnel No.4 is being lowered. Feb. 1st,1935.

Pg.69 #3171 Looking upstream toward Boulder Dam, from he lower portals road. Note the downstream cofferdam excavation. March. 26, 1935. Pg.69 #3157 General view, taken from the Nevada side, looking downstream on Boulder Dam. March 25, 1935. Pg.69 #3151 Looking down on Boulder Dam, showing the finished roadway, and the Intake Bridge girders in place. March 25, 1935.

Pg.70 #3152 Looking upstream toward the Nevada Intake Towers, showing the Intake Bridge girders in place. March 25, 1935. Pg.70 #3177 Looking upstream toward the Nevada Powerhouse. Mar. 26, 1935. Pg.70 #3181 Looking upstream toward the No.1 upstream plug, showing approximately 7,100 second feet of water being discharged. March 26, 1935. Pg.70 #3178 Looking upstream toward the Arizona Powerhouse. Mar. 26, 1935.

Pg.78 #3312 The Arizona Valve House, from the Nevada side. May 27, 1935. Pg.78 #3277 Telephoto view, from the Arizona side, showing portion of the Nevada Powerhouse. May 27, 1935. Pg.78 #3311 The Nevada Valve House, from the Arizona side. May 27, 1935. Pg.78 #3276 Telephoto view, from the Arizona side, showing the central section of the Powerhouse. May 27, 1935.