Black and white image of a celebration at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the roof of the powerhouse. The visitors, the first to use this setting, would all be wearing hard hats. Tables, chairs, barbeque pits, a bandstand, and dance floor are visible.
Black and white image of a celebration at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the roof of the powerhouse. The visitors, the first to use this setting, would all be wearing hard hats. Tables, chairs, barbeque pits, a bandstand, and dance floor are visible.
Black and white image of a celebration with fireworks at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the powerhouse roof. The visitors, all wearing hard hats, were the first to use this setting. Tables and chairs are also visible.
Black and white image of a celebration with fireworks at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the powerhouse roof. The visitors, all wearing hard hats, were the first to use this setting. Tables and chairs are also visible.
Black and white image of a celebration at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the powerhouse roof. The visitors, all wearing hard hats, were the first to use this setting. Tables and chairs are also visible on the powerhouse roof.
Black and white image of a party at the Hoover Dam powerhouse. The Young Presidents' Organization arranged a party for nearly 1,000 people that was held on the powerhouse roof of Hoover Dam. The visitors, all wearing hard hats, were the first to use this setting. This group photo includes Ellis L. Armstrong, Dick Woodward, and Frank Lord.
Black and white image of Dick Woodward (left) and Ellis L. Armstrong at a party held by the Young Presidents' Organization on the roof of the powerhouse at Hoover Dam. Nearly 1,000 people attended, all wearing hard hats, and were the first to use this setting.
Black and white image showing the completed construction of Diversion Tunnel No. 4, one of four 50-foot diversion tunnels at Hoover Dam. Construction men can be seen at the base of the tunnel. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image showing an upstream view of Black Canyon from the Hoover Dam construction site. In the distance, Fortification Hill can be seen along with tunnel lining forms near the inlet portals of the Nevada diversion tunnels. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image showing an upstream view of Black Canyon from a point on its Nevada side, approximately a half mile below the Hoover Dam construction site. Note: Boulder Dam was officially renamed Hoover Dam in 1947.