This photograph has three images. The first one (0272_0093) is an upside-down picture that reads, "York, nice friend with a car. We would drive around and take some pictures." The second one (0272_0092) shows John Kizziar (left) and York (right). The third image (0272_0091) is a picture of John T. Kizziar.

An image of vehicles traveling down Boulder Highway between Boulder City and Hoover Dam.

An aerial view from over the spillway bridge of the open valves at Hoover Dam.

This photograph has three images. The first one (0272_0049) shows the No.2 diversion tunnel with floor and side walls concreted during the Hoover Dam Project (Taken by Oakes). The inscription reads "Trucking mud to short hoist above that transfers the mud further in, reinforcing with re-bar where spillway 'intersects' diversion tunnel." The second one (0272_0050) reads, "Big Gamble - using 8 yd. Bucket, dumping mud in small face pour. Notice all that rebar. This is where the dam takes off from the powerhouse. Did this once too often - at a much higher elevation. Cable broke at tail tower, bucket no longer under control. Knocked out the panel and slide down the face of the dam and slowly came to a halt. The doors came open and dumped the mud. Lot of excitement at the pour. Someone noticed a small light down by the bucket. Investigating, they found a bell boy striking matches. He had ridden the bucket all the way down." The third image (0272_0051) reads "View of powerhouse. (x) shows where turbines will be installed." (Bureau of Reclamation photo)

A image of electrical transmission towers and wires near Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

This photograph has four images. The first one (0272_0052) with the upside-down picture, has a handwritten inscription that reads, "View of hi-line and carriages on a double cable. First used on buckets. Was a little slow. These hi-lines stretching across the dam on a huge cable. Consist of several small cables in center, weaved together. In the center, outside, the carriages ride on smooth surface of one inch wide steel strips wrapped around the cables for a tight and smooth surface." The second image (0272_0053) reads, "'Pipe fitters' raising air and water pipe to a higher elevation for easier access." The third one (0272_0054) reads "'The water bag', a very popular item on Dam. Warning signs placed around, 'Do not drink water from taps on dam'. Arsenic in the water and in the mts. Once you get an open cut, you must avoid getting water from the dam in it. You have a good chance of arsenic poisoning. A boy in my dormitory got it. He broke out in sores at some spot. After long treatments it would heal, but two or three weeks break in another spot. Once in the blood, too bad." The fourth image (0272_0055) reads "Another good view. Stiffleg making a pour on dam nearest and #7 working in a lower pour - pours are numbered - from face to upstream face. 1-2-3 etc. across from wall to wall by alphabet, the slot (center) is between J & K."

An image of two vehicles traveling along Boulder Highway between Boulder City and Hoover Dam.