Archival objects in this container: Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam's downstream face and outlet works, approximately 1935-1936 Hoover Dam outlet works with the valves open, approximately 1934-1936 Hoover Dam with open jet flow gates, 1935 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936 Hoover Dam with open jet flow gates, approximately 1935-1936