Archival objects in this container: Pipe being lowered by cables during Hoover Dam construction, approximately 1930-1935 Downstream face of the Hoover Dam during construction, 1935 April 25 Hoover Dam construction and a cement plant from the Nevada side highway, approximately 1930-1935 Completed dam face and partially-completed powerhouse at the Hoover Dam construction site, approximately 1934-1935 Construction work on the elevators and crest of the Hoover Dam, approximately 1934-1935 Hoover Dam's downstream face during construction, approximately 1933-1935 Downstream side of the Hoover Dam construction site, approximately 1933-1935 Downstream side of the Hoover Dam construction site, 1935 July 25 Downstream side of the Hoover Dam construction site, approximately 1933-1935 Downstream powerhouses nearly completed at the Hoover Dam construction site, approximately 1933-1935 Hoover Dam's downstream base during construction, approximately 1933-1935 Downstream view of the Hoover Dam construction site, 1935 September 22 Downstream face of Hoover Dam during construction, approximately 1933-1935 Downstream face of Hoover Dam, 1935 October 28 Workers welding railroad tracks for powerhouses for Hoover Dam construction, approximately 1930-1935 Downstream face of Hoover Dam during construction, approximately 1934-1935 Downstream face of the Hoover Dam and powerhouse as a truck is lowered by cables at the Hoover construction site, approximately 1934-1935 Downstream face of the dam from the Nevada Highway as a railroad boxcar is lowered by cables at the Hoover Dam construction site, approximately 1933-1935 Railroad boxcar being lowered by cable into Hoover Dam construction site, approximately 1931-1935 Downstream face of the dam as a railroad boxcar is lowered by cables at the Hoover Dam construction site, approximately 1933-1935 Nearly completed Hoover Dam in Black Canyon prior to the release of water, approximately 1933-1935 Nearly completed Hoover Dam in Black Canyon prior to the release of water, 1935 Nearly completed Hoover Dam in Black Canyon prior to the release of water, approximately 1933-1935 Nearly completed Hoover Dam in Black Canyon prior to the release of water, approximately 1934-1935 Nearly completed Hoover Dam in Black Canyon prior to the release of water, 1935 August 10 Load More