Archival objects in this container: Workers at the Hoover Dam, approximately 1931-1936 Workers at the Hoover Dam, approximately 1931-1936 People looking down at the Hoover Dam during construction, approximately 1931-1936 Construction workers at the Hoover Dam, approximately 1931-1936 Top of the Hoover Dam, approximately 1931-1936 Two people in Black Canyon near the Hoover Dam construction site, approximately 1930-1933 Looking down at the Colorado River near the Hoover Dam construction site, approximately 1930-1933 Construction of the Hoover Dam, approximately 1931-1936 Blast during construction of the Hoover Dam, approximately 1931-1936 Construction of the Hoover Dam, approximately 1931-1936 Looking down the Colorado River near the Hoover Dam construction site, approximately 1930-1933 Construction of the Hoover Dam, approximately 1931-1936 Group of people in a boat crossing the Colorado River, approximately 1931-1936 Six Companies' construction trucks, approximately 1931-1936 Building full of construction trucks and workers, Boulder City, approximately 1931-1936 Construction vehicles, approximately 1931-1936 Construction vehicles, approximately 1931-1936 Construction vehicles, approximately 1931-1936 Workers in a shop, approximately 1931-1936 Train in Boulder City, approximately 1931-1936 Two people near a train in Boulder City, approximately 1931-1936 Lake Mead, approximately 1931-1936 Looking down Black Canyon toward the Colorado River, approximately 1930-1936 Looking down Black Canyon toward the Colorado River, approximately 1930-1936 Looking down the road in the valley near Boulder City, approximately 1930-1936 Load More