Archival objects in this container: Looking down the transition into Number 4 raise: photographic print, 1934 June 21 Looking downstream at Boulder Dam, from the Arizona side: photographic print, 1934 July 24 Looking downstream from the Arizona side of Black Canyon, showing the reservoir level at the base of the intake towers: photographic print, 1935 June 24 Looking downstream from the top of Boulder Dam. Note the valve houses in the background: photographic print, 1935 June 25 Looking downstream into Number 4 raise, showing close-up of portal forms: photographic print, 1934 October 25 Looking downstream into Number 4 raise, showing the form work: photographic print, 1934 August 21 Looking downstream into the Arizona powerhouse, showing location of the turbine rooms, from room galleries, and penstocks: photographic print, 1934 October 30 Looking downstream into the port of Number 4 raise: photographic print, 1934 September 27 Looking downstream toward the upstream face of Boulder Dam, from the Arizona side: photographic print, 1934 September 27 Looking downstream, showing spillways, intake towers and upstream face of Boulder Dam: photographic print, 1934 October 25 Looking in a general downstream direction, on the Arizona Black Canyon highway, showing Six Companies Inc. road work: photographic print, 1935 May 27 Looking toward the power house and valve houses, from top of Boulder Dam: photographic print, 1935 July 25 Looking upstream at the Arizona spillway: photographic print, 1933 July 22 Looking upstream in Black Canyon, from the Nevada side, showing Boulder Dam and the Arizona intake towers in center. Arizona spillway shown at upper right. Himix plant at lower left, and government head tower at lower right: photographic print, 1934 April 17 Looking upstream in lower Number 3 plug. Note one of pipe sections in place: photographic print, 1935 November 25 Looking upstream into falsework under the Arizona spillway bridge, showing jacks in place. Hopper arrangement in foreground is used for pouring Number 4 raise: photographic print, 1935 January 08 Looking upstream into Number 1 raise from the river side of the Nevada spillway, showing form work at portal: photographic print, 1934 August 31 Looking upstream into Number 3 plug and raise, showing plug concrete in place, cooling headers above and rail extension for moving steel pipe: photographic print, 1934 November 17 Looking upstream toward Nevada spillway drainage flume and general area: photographic print, 1935 August 26 Looking upstream toward Nevada spillway drainage flume, and general area: photographic print, 1935 September 27 Looking upstream toward the Nevada powerhouse: photographic print, 1935 March 26 Looking upstream toward the Nevada spillway, showing the placing of the cylinder gates: photographic print, 1934 July 20 Looking upstream toward the upper plug and raise, in diversion tunnel Number 3: photographic print, 1934 May 25 Looking upstream, on roof of Nevada valve house. Steel rails in place, ready for pouring concrete slab: photographic print, 1935 September 27 Looking upstream, on the Nevada side of Black Canyon, toward Boulder Dam, showing the road tunnel portal: photographic print, 1935 June 24 Load More
