Archival objects in this container: Open valves at Hoover Dam outlet works, approximately 1934-1936 Railroad tracks on the Nevada side of open valves at Hoover Dam outlet works, approximately 1935-1936 Nevada side of open valves at Hoover Dam outlet works, approximately 1935-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936 Arizona side of open valves at Hoover Dam outlet works, approximately 1934-1936 Arizona side of open valves at Hoover Dam outlet works, approximately 1934-1936 Arizona side of open valves at Hoover Dam outlet works, approximately 1934-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936 Discharge of water from Arizona canyon wall outlet works at the Hoover Dam, approximately 1934-1936 Open valves at Hoover Dam outlet works at night, approximately 1935-1936 Open valves at Hoover Dam outlet works at night, approximately 1935-1936 Open valves at Hoover Dam outlet works at night, approximately 1935-1936 Open valves at Hoover Dam outlet works at night, approximately 1935-1936 Open valves at Hoover Dam outlet works at night, approximately 1935-1936 Open valves at Hoover Dam outlet works, approximately 1934-1936