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.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.
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.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.
p.6 #953 Looking out of upper portal of Diversion Tunnel No.2. Bucyrus Erie 43-B gas-air shovel reflected in pool of water. Mar. 7, 1932. p.6 #971 Flashlight close-up of workmen drilling on invert excavation. Mar. 7, 1932 p.6 #970 Flashlight photograph of drilling jumbo working on invert excavation at upper portal of Diversion Tunnel no.4 Mar. 8, 1932. p.6 #972 Wings extended for drilling fold back against the sides of drilling jumbo. Mar. 8, 1932.
p.8 #989 Looking upstream at Black Canyon. Dam will be located just upstream from foot-bridge, at bottom of picture. Entrance to upper portals of diversion tunnels opposite the middle truck bridge. Mar. 12, 1932. p.8 #996 Looking downstream from same point as No.989. Lower portals of diversion tunnels are just below. This picture Presents graphic view of problem of muck disposal. Mar. 14, 1932.