Pg.96 #3549 Looking south toward Boulder Dam Switchyard, showing construction and excavation. Nov. 26, 1935. Pg.96 #3531 Looking upstream in lower No.3 Plug. Note one of pipe sections in place. Nov. 25, 1935. Pg.96 #3551 Looking upstream along Nevada approach to Boulder Dam. Note rubble wall being built and excavation for tower footings. Nov. 26, 1935. Pg.96 #3534 Looking upstream in lower No.2 plug, showing pipe in place. Nov 25, 1935.

Pg.45 #2802 Looking downstream into the Arizona Spillway and No. 4 raise. Aug. 21st, 1934. Pg.45 #2803 Looking Downstream into No. 4 raise, showing the form work. Aug. 21st, 1934. Pg.45 #2794 Looking downstream from the Nevada side, toward the upstream face of Boulder Dam, showing the Spillways, Arizona Intake Towers and Cableways. Aug. 17th, 1934. Pg.45 #2825 Looking upstream in Upper No. 3 plug, showing pumpcrete and pipes. Aug. 25th, 1934.