A close-up photograph of a plaque at Hoover Dam listing the names of those who oversaw and assisted in the construction of Hoover Dam, on the left side of the elevator door, on the day of the dedication.
An image of Governor Herbert Ham and an unidentified man at the Boulder Dam decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of the Boulder Canyon Project, also known as Hoover Dam. This image features the first round of drilling to enlarge the upper portal of diversion tunnel No. 2. The welded steel "Jumbo Rig" mounted on the truck has 25 air drills on it. The swing shift crew standing next to the rig prepare for work. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of the illuminated downstream face of Hoover Dam at night, including the powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of Rotary Club members having lunch at Boulder Dam while an unidentified man gives a speech. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of Rotary Club members having lunch at Boulder Dam while an unidentified man gives a speech. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Machine shop and warehouse group of buildings, surrounded by material storage yards. Used for Boulder Dam, now called Hoover Dam, construction. Site Name: Hoover Dam (dam)
An image of a man, possibly a construction worker, standing below the Hoover Dam outlet works. Note: Boulder Dam was officially renamed Hoover Dam in 1947.