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.
p.9 #1011 Marion electric shovel with 3 1-2 cubic yard rock dipper loading into White 8 cubic yard truck, at Nevada spillway cut. Mar, 18, 1932. p.9 #1014 Mack truck with 14 cubic yard body being loaded at Nevada Spillway cut. Five similar trucks being used on this operation. Mar. 18, 1932. p.9 #1004 White truck dumping near site of Nevada spillway cut and extending road the for muck disposal. Mar. 16, 1932.
p.11 #1067 Nevada Spillway open cut excavation, as seen from Arizona side of river. Mar. 28, 1932. p.11 #1046 Same blast as No.1063, taken from river-level looking downstream. Mar. 28, 1932. p.11 #1063 Blast in scaling down canyon walls for construction of intake towers. Mar. 28, 1932. p.11 #1047 View taken few minutes after No.1046, to the left. Mar. 28, 1932.
p.14 #1277 Steel forms for lining the arch sections of diversion tunnels were erected on muck-fill on Nevada side of river. Jun. 18, 1932. p.14 #1235 Section of arch jumbo form being transported across river by overhead cableway. Note workman on top of form. Jun. 10, 1932. p.14 #1278 Forms were constructed in 11-foot sections and transported to Arizona side by over head cableways. Jun. 18, 1932.
Pg.24 #2558 General view of Himix, including Blending Plant silos at left rear of picture. March 1st, 1934. Pg.24 #2543 Looking downstream in lower No. 2 plug, showing form work. Feb. 20th, 1934. Pg.24 #2542 Excavation for bridge abutment in Arizona Spillway. Feb. 29th, 1934. Pg.24 #2539 Close-up of Cooling Pipe Layout in Panel H-3. Feb. 20th, 1934.
Pg.83 #3352 - #3353 Panorama, looking upstream toward Boulder Dam reservoir, from Observation Point. July 25, 1935. Pg.83 #3351 Looking downstream toward Boulder Dam, from the Arizona side. July 25. 1935. Pg.83 #3370 View taken from the Nevada side, looking downstream toward Boulder Dam. July 26, 1935.
Pg.26 #2581 Foundation forms for the Arizona Power House, taken from the Nevada Valve House Bench. March 16th, 1934. Pg.26 #2599 Forms for Arizona Power House retaining wall. March 14th, 1934. Pg.26 #2617 Telephoto view of foundation forms for the Arizona Power House, taken from Lookout Point. April 1st, 1934. Pg.26 #2610 View looking into Power House block A-5. March 28th, 1934.