Pg.74 #3203 View of Power House Governor Gallery, elevation 645, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3199 View of Power House Pump Gallery, elevation 625, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3201 View of Power House Turbine Gallery, elevation 643, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3194 View of Power House Cable Gallery, elevation 653, looking downstream on the Arizona side. Apr. 10, 1935.

Pg.76 #3269 Boulder Dam, looking downstream from the Arizona side. May 27, 1935. Pg.76 #3284 Looking in a general downstream direction, on the Arizona Black Canyon Highway, showing Six Companies Inc. road work. May 27, 1935. Pg.76 #3296 Boulder Dam, looking downstream from the Nevada side, showing Spillways and the Intake Towers. June 1, 1935. Pg.76 #3303 View of the open cut portion of the Switchyard Control Circuit Tunnel. Shovel is excavating for the Switchyard, and the building in the foreground is the power sub-station. The Babcock and Wilcox Company plant can be seen in the extreme background. June 1, 1935.

Description provided on front of image: "No. 2 diversion tunnel with floor and side walls concreted, Hoover Dam, Oakes."

Photograph of a catwalk during the Hoover (Boulder) Dam construction period.

Picture of the Arizona spillway and bridge.

Black and white image of a speedboat near the upstream side of Hoover (Boulder) Dam.

Black and white image of President Roosevelt and party inspection of the dam at the dedication ceremonies.