Access Restricted Archival objects in this container: 586: View of the Colorado River: photographic postcard, approximately 1930 to 1939 587: "Lake Mead from the top of Boulder Dam": photographic postcard, approximately 1930 to 1939 588: Boulder Dam with powerlines in foreground: photographic postcard, approximately 1930 to 1939 589: View of a boat on Lake Mead: photographic postcard, approximately 1930 to 1939 590: Boulder Dam from the Arizona side: photographic postcard, approximately 1930 to 1939 591: Boulder Dam construction nearing completion: photographic postcard, approximately 1930 to 1939 592: Downstream side of Boulder Dam, view of powerhouses: photographic postcard, approximately 1930 to 1939 593: View of Boulder Dam and Lake Mead reservoir filling with water: photographic postcard, approximately 1930 to 1939 594: View of Boulder Dam from the dry riverbed downstream: photographic postcard, approximately 1930 to 1939 595: View of completed Boulder Dam from downstream: photographic postcard, approximately 1930 to 1939 596: Generator rotor being installed at Boulder Dam: photographic postcard, approximately 1930 to 1939 597: View of powerhouses from the top of Boulder Dam: photographic postcard, approximately 1930 to 1939 598: View from powerhouses at Boulder Dam: photographic postcard, approximately 1930 to 1939 599: View of completed Boulder Dam from downstream: photographic postcard, approximately 1930 to 1939 600: A boat on Lake Mead with Fortification Hill in the background: photographic postcard, approximately 1930 to 1939 601: "One of the many fast speedboats of Boulder Grand Canyon Navigation Company": photographic postcard, approximately 1930 to 1939 602: "Boulder Canyon, Lake Mead": photographic postcard, approximately 1930 to 1939 603: View of Lake Mead from Goat Island: photographic postcard, approximately 1930 to 1939 604: View of Lake Mead and the Black Mountains: photographic postcard, approximately 1930 to 1939 605: Speedboat in Black Canyon: photographic postcard, approximately 1930 to 1939 606: View of completed Boulder Dam: photographic postcard, approximately 1930 to 1939 607: View of completed Boulder Dam: photographic postcard, approximately 1930 to 1939 608: View of completed Boulder Dam: photographic postcard, approximately 1930 to 1939 609: View of completed Boulder Dam: photographic postcard, approximately 1930 to 1939 610: First water flowing through the valve house into the riverbed at Boulder Dam: photographic postcard, approximately 1930 to 1939 Load More