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.65 #3118 Looking down on top of Boulder Dam. Note the bucket pouring the roadway on "R" block at elev. 1232. Feb. 25th, 1935. Pg.65 #3126 Telephoto view of the Arizona Valve House, from the Nevada side. Feb. 25th, 1935. Pg.65 #3141 A view of Boulder Dam Lake and reservoir area from Observation Point. March 4th, 1935. Pg.65 #3127 Telephoto view of the Nevada Valve House, from the Arizona side. Feb. 25th, 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.71 #3160 Looking downstream toward the No.6 Arizona Intake Tower Control House. Note the Bridge forms being placed for pouring. Mar. 25, 1935. Pg.71 #3169 View taken from the Arizona side, showing the Intake Towers and the upstream face of Boulder Dam. Mar. 26, 1935. Pg.71 #3173 View taken from No.4 Raise, looking upstream at the Arizona Spillway Bridge. March 26th, 1935.

Pg.82 #1 (0267 0022) Aerial view, looking downstream from the Arizona side of Black Canyon. June 4, 1935. Pg.82 #3321 Looking downstream from the Arizona side of Black Canyon, showing the reservoir level at the base of the Intake Towers. June 24, 1935. Pg.82 #3 Aerial view, looking upstream toward Boulder Dam. June 4, 1935. Pg.82 #3339 Looking upstream from Observation Point, showing the reservoir area. June 24, 1935.

Pg.85 #3355 Looking downstream toward the Arizona Spillway, showing highway bridge and Arizona Highway. Jul. 25, 1935. Pg.85 #3381 Switchyard, Rigging Loft, and surround area. Jul. 26, 1935. Pg.85 #3379 Looking downstream toward No.1 raise and Nevada Spillway. Note drainage flume in foreground. Jul. 26, 1935. Pg.85 #3383 Looking into No.3 downstream plug, from the Nevada plug adit. Note forms for the first pour being built. Jul. 26, 1935.

Pg.89 #3423 Interior view of Nevada Valve House, looking downstream. Note N-6 Emergency Gate being installed. Aug. 27, 1935. Pg.89 #3424 Nevada Valve House roof, looking upstream. Note low strength pedestals and double layer of railroad iron being placed. Aug. 27, 1935. Pg.89 #3407 Switchyard control house, yard and present sub-station. View taken looking toward Boulder Dam. Aug. 26, 1935.