Photographer's notes: "Evening view downstream from the Arizona side of the Black Canyon with the old crane platform (from Hoover Dam construction) below, June 29, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Aerial view of a motor boat on Lake Mead near the mineral deposit banding that revealed the lower level of the Lake Mead reservoir, June 30, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Night time view from the top of the temporary pylons down to the Arizona bridge deck. Note: This was the only evening I was allowed on top of the temporary pylons to shoot." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Final concrete pour, which formed the keystone of the arch and completed its structure. Photographed from the Arizona side north or the bridge. August 10, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Final concrete pour, which formed the keystone of the arch and completed its structure. Photographed from the Arizona side north or the bridge. August 10, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Final concrete pour, which formed the keystone of the arch and completed its structure. Photographed from the Arizona side north or the bridge. August 10, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "A solitary car crossed the bridge. Tourists and visitors to the dam can still descend in cars using the old Nevada side road. January 14, 2011." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "Cable stays supported arch construction until the arch was complete. Formwork at the end of the arch segment created the framework for pouring each new concrete section." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Black and white image of (left -right) an unidentified man, Joe E. Lewis, Jayne Mansfield, and David Janssen at the "Ocean's 11" premiere in front of The Fremont Theatre. Site Name: Fremont Theatre (Las Vegas, Nev.) Street Address: Fremont Street
An airman holds off enemy troops who swarmed the base camp in simulated battle during war games dubbed "Operation Red Horse" at Nellis Air Force Base, Nevada. Site Name: Nellis Air Force Base (Nev.)