Pg.90 #3417 View of Arizona side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3397 Nevada construction adits, Valve House and plug adit portal. Note absence of upstream end of lower portal road tunnel. Aug. 21, 1935. Pg.90 #3412 View of Nevada side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3431 View taken from downstream Nevada Plug adit, looking toward No.2 downstream plug. Aug. 27, 1935.
Colorado River-Hoover Dam. Dam and powerhouse construction from book: Boulder Dam of the Great Southwest by Ralph B. Simmons' 1936. Inscription reads: "Below the massive wedge of concrete showing the power house rising against the hard rock walls of Black Canyon." Site Name: Hoover Dam (dam)