Archival objects in this container: Visitors and cars along the top of the Hoover Dam's crest, approximately 1936-1939 Hoover Dam's crest, approximately 1935-1939 Visitors standing in line to board the visitors' elevator at Hoover Dam, approximately 1936-1939 Visitors standing in line to board the visitors' elevator at Hoover Dam, approximately 1937-1940 Visitors standing in line to board the visitors' elevator at Hoover Dam, approximately 1937-1939 Man standing on top of the power plant at the base of Hoover Dam, approximately 1935-1939 Hoover Dam's crest, approximately 1936-1939 Visitors on top of a Hoover Dam's spillway bridge, approximately 1935-1939 Visitors on top of a Hoover Dam's spillway bridge, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, intake towers, and upstream face, approximately 1935-1939 Hoover Dam spillway bridge, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway bridge, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway, approximately 1935-1939 Hoover Dam spillway bridge, approximately 1935-1939 Load More