A two cranes on a packed-earth platform are in the process of removing a cofferdam around Bonneville Dam. The cofferdam was installed to clear water during a project to replace baffles at the base of the dam (negative 1 of 8).

Baffles on the front of Bonneville Dam exposed by low water behind a cofferdam. The cofferdam was installed to clear water during a project to replace baffles at the base of the dam (negative 4 of 8).

A man in a hardhat stands holding a metal cable beside the top of a cofferdam. Bonneville dam is visible in the background. The cofferdam was installed to clear water during a project to replace baffles at the base of the dam (negative 6 of 8).

Aerial photograph and survey of Bradford Island and the construction of the Bonneville Dam on the Columbia River. Written labels on the print indicate the locations of the fish hatchery, ship locks, power house, and more. Writing on the top right of the print reads, "Aerial view from 5,000 ft. elev. Bonneville Power and Navigation Project. Cost 32,200,000. Construction period - Nov. 1933 - Dec. 1937." Other writings on the print indicate this was taken on March 27, 1935 by Brubaker Aerial Surveys. Stamp on the back of the print requests that Brubaker be given credit for the photograph.

Photograph of a model of the Bonneville Dam. The model was built by U.S. Engineers, and labels mark the main dam, spillway, fish elevators, power house, and more. A railroad in the foreground of the model is labeled "Spokane, Portland & Seattle Ry." Additional writing on the print indicates the quantities and costs involved in building the dam. Copyright on bottom of print for Photo-Art Commercial Studios in Portland.

Photograph of a portion of the Bonneville Dam under construction. The mountains of the Columbia River Gorge are visible in the background.

Photograph of a portion of the Bonneville Dam under construction. Construction workers work on the dam.

Photograph of a construction area located between the spillway of the Bonneville Dam and several railroad tracks. The Columbia River flows around the construction site and through the open spillways of the dam. There are 2 stamps on the back of the print. One is for Photo-Art Commercial Studios and the other for West Coast Engraving Co.

Photograph of a portion of the Bonneville Dam under construction. Two construction workers stand on construction materials that are suspended in the air, moving from one location to another.