"3269 Boulder Dam, looking downstream from the Arizona side. May 27th, 1935.
3296 Boulder Dam, looking downstream from the Nevada side, showing Spillways and the Intake Towers. June 1st, 1935.
3284 Looking in a general downstream direction, on the Arizona Black Canyon Highway, showing Six Companies Inc.
road work. May 27th, 1935.
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 1st, 1935"