Photograph showing the South Fork of the Clackamas river, looking towards a large rocky cliff-face. A man can be seen walking on a log in the river, while three others sit on a rock extending into the water. Written on the negative is “E301.09-O-36.”

Photograph taken from dirt road looking downhill towards a temporary camp made up of canvas tents and wooden buildings. There is snow in the ground throughout the image, and in the background is a steep hillside with trees. Written on the negative is “E301.09-O-60.”

Photograph showing a group of men standing with piles of cut wooden boards and logs. One man leans down while the rest of the group looks on. In the foreground is a steam tractor with an attached belt used to run the saw blade. Written on the negative is “E301.09-O-105.”

Photograph showing a temporary camp at Davis Ranch, with tent cabins in the snow. Each cabin includes a chimney, many of which show smoke. A worn path can be seen extending from the camera towards the camp area. In the background is a wooded hillside.

Photograph looking across the South Fork of the Clackamas River, towards camp #2 on the opposite shore. A row of tent cabins, and several small wooden buildings can be seen. In the background is a forested hillside.

Photograph showing a quarry of loose dirt and rock, with a man standing next to an electric shovel vehicle. An arm extends from the machine over a pile of dirt and tree branches. In the background, a broken hillside can be seen. Written on the negative is “E301.09-O-112” and “R-1.”

Photograph showing the exterior of Station B in Oregon City. The flowing Willamette River can be seen at the base of the stone building. Behind, utility poles and another building can be seen at the top of a hill.

Photograph taken from a high angle showing the exterior of Station B in Oregon City. Willamette Fall is visible at the center of the frame, and a building is on the left side. Across the water, several building can be seen on a wooded hillside.

Photograph showing men in work wear standing next to a large Y shape penstock. The metal penstock is seated on long pieces of wood with visible writing on different sections. A railroad track can be seen crossing through the front of the frame.

Photograph taken from a high angle showing a man in a hat and long jacket standing in a incomplete switch room. The floor is lined with metal mesh sheeting with pipes. Written on the negative is “E301-0-3420.”

Photograph showing men working on a large wood frame structure. Pieces of wood and tools can be seen throughout the image, and a ladder can be seen in the bottom right corner. Written on the negative is “Intake, Bull Run, 2-26-12 (67).”

Photograph showing two men standing next to a utility pole tower with insulators visible at the top. One man is wearing a suit and bowlers hat, while the other wears a long jacket, a hat, with tall boots and a pipe. Written on the negative is “Tower. Bull Run. 2-26-12 (69).

Photograph showing the interior of Station B in Oregon City. On the main floor are several large machines (generators?) with other electrical infrastructure visible near the ceiling. A small desk and chair can be seen.

Photograph taken from a distance showing Station B in Oregon City. Numerous buildings are visible throughout the frame, both on the near and far shores of the Willamette River. Several large smokestacks can be seen on multiple buildings.

Photograph of the Cazadero Dam taken in front of the spillway. Water flows over the ledge into a pool at the base, and another stream of water can be seen spilling down on the right side of the frame. The stacked wooden dam structure is visible to the left of the main spillway.

Photograph showing the interior of Station G at the Cazadero Dam showing the generator units and building structure. Several large windows an be seen on the left side of the frame, and a man can be seen in the background near the top.

Photograph showing a suspension bridge over the Clackamas River in near the River Mill dam area. The bridge crosses between two tall cliff faces, beyond which the river can be seen around. Snow is on the ground throughout the image. Written on the negative is “Feb 3, ‘10, PES 2014.”

Photograph showing an excavated area with dirt, water, and gravel. In the distance, buildings, trees, and hillsides can be seen. Also visible in the distance is Mt. Hood. Written on the negative is “0256.”

Photograph showing several temporary tent structures in a large field. Is the distance, another structure can be seen, in addition to trees and hills. (Image note: discoloration of the negative is visible at the center of the frame, in addition to a small damaged area also near the center).

Photograph showing a construction site Bull Run. Two men face away from the camera while standing next to piles of cut wood. A small building and wooden tower with ladder can be seen in the background.

Photograph showing construction at the Big Sandy Dam (likely the Marmot Dam). Workers can be seen on the wooden structure, with flowing water at the right side of the image. In the background are several small wooden structures. Written on the image is “B.S. 32.”

Photograph showing the Big Sandy Dam (likely the Marmot Dam) spillway with flowing water, taken looking upriver. A wooden platform can be seen crossing the dam above the water. Written on the negative is “B.S. 47.”

Photograph showing an excavated dirt canal, with visible water at the bottom level. In the distance, works can be seen along the sides of the canal, and a tunnel entrance is visible in the background. Written on the negative is “B.S-22.”

Photograph showing two men with a horse towing a metal cart on a railroad track. The horse is attached to the cart via a harness, with the reins being held by one of the individuals. In the background are trees and a hillside.

Photograph showing construction of the tunnel at the Big Sandy Dam (likely the Marmot Dam). A man stands next to a machine next to the tunnel entrance, which is emitting a large plume of steam. Wood and gravel is visible throughout the image. Written on the negative is “B.S. 48.”

Photograph showing a wooden flume bridge crossing the Little Sandy River near the Little Sandy Dam. Five men in work wear stand on pieces of wood next to the flume while looking at the camera. Water can be seen under the bridge in the background. Written on the negative is “E301-03396.”

Photograph showing three men standing next to a metal utility structure at the top of the transformer house at the Little Sandy Dam. Two of the men are in work wear, while a third is wearing a suit and hat. Trees and hills can be seen in the distance. Written on the negative is “E301-0-3402.”

Photograph showing construction at the Big Sandy Dam (likely the Marmot Dam). Several men can be seen standing on the wooden structure at the center of the frame. In the background, a wooden bridge crosses the river, surrounded by trees. Written on the image is B.S-19.”