Photograph showing water cascading down Willamette Falls in Oregon City. Industrial buildings can be seen just above the falls, with a rocky cliff and houses visible in the background. Above the waterfall is a spillway. Written one of the of large industrial buildings is "Publishers Paper Co."

Photograph showing a man wearing a long jacket standing on a raised cement platform. He is looking towards three large electrical units with belts, and water can be seen under the platform. In the background is a wooded hillside. Written on the negative is "51-868."

Photograph showing a group of seated people outside a stone building, with a man standing and facing the group next to a stairway. A sign on the building reads "River Mill Hydroelectric Project," and a river and trees can be seen in the background. Written on the negative is "51-864."

Photograph showing a man facing towards a large electrical generator at the Oak Grove Dam. On his right is a stairway leading to the upper level of the generator, which is in a large industrial powerhouse building. Written on the negative is "49-291."

Photograph, looking towards the powerhouse structure at the Oak Grove Dam. Large pipes can be seen behind the building, extending up a large hill towards a tank at the top. To the left of the stone building, a retaining wall and metal frame structure can be seen. Written on the negative is "49-289."

Photograph showing the interior of the powerhouse at the Oak Grove Dam on the Clackamas River. Two large electrical units can be seen, with upper walkways. The building is a large industrial space with tall windows. Written on the negative is "49-293."

Photograph showing groups of men working on a dam in Oregon. Two men are standing in the shallow water, while another two are in a rowboat to the right. Another four men stand on top of the wooden structure to the left next to a hoisting machine. In the background, multiple smokestacks can be seen coming from a large industrial building.

Photograph showing a dam at Willamette Falls in Oregon City. In the center of the frame, water cascades through an opening between a building and dam structure. Numerous other buildings and utility poles can be seen throughout the image.

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6010."

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway in the background. Power lines carry electricity from the plant. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6007."

Photograph showing a group of officials and laborers standing on a hillside next to a wooden cart and train tracks. Two individuals in work clothing standing behind the main group. A loose dirt hillside and trees can be seen in the background. Closer to the photographer, lots and water can be seen, as well the the edge of a saw.

Photograph of interior of Station P at Oak Grove project showing two pieces of large round (generator?) equipment. The building is industrial with large windows on visible walls.

Photograph showing large machinery at Oak grove unit number 1 inside an industrial building. A man in dark hat and coat walks in front.

Photograph of interior of Station P at Oak Grove project showing generator equipment from Pelton Motor Wheel Company. The building is industrial with large windows on visible walls.

Photograph showing a cement dam on the Oak Grove Fork of the Clackamas River, with a noticeable water pool in front of the dam structure. A man seated on a platform can be seen over the water on the right side of the image, with submerged pieces of wood to the left. Negative sleeve notes “less than one hour after filling.” (Image note: see related image PGE 16-903).

Photograph showing two men in hats and coveralls working with a generator component at the Oak Grove powerhouse. One man is facing towards the unit, while another looks towards the camera while facing towards the left. Wooden blocks can be seen under the rotor, which is on the ground.

Photograph of the exterior west wall of Station B in Oregon City, with the Willamette River. Two men work on a wooden lock gate. Numerous utility poles are visible throughout the image.

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 near the center of the frame.

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. An individual stands at a small desk near the middle of the frame, and is looking at the camera.

Photograph of the exterior of Station B in Oregon City, with the flowing Willamette River in the foreground. Behind the brick building a hill with utility poles and three large tanks can be seen.

Photograph showing the head gate controllers at the Cazadero power station (Station G). Each controller is painted with a number.

Photograph of Bull Run powerhouse, with two buildings. The river is visible on the right side at the bottom of the building. Trees and transmission lines are visible in the distance.

Photograph showing machinery wreckage at Station B in Oregon City. Pieces of machinery can be seen throughout the image, disconnected and broken from the main mechanism.

Photograph showing machinery wreckage at Station B in Oregon City. Pieces of wood and stone lay on the floor, along with pieces of disconnected machinery. At the back of the frame, a man stands in a doorway while looking at the camera.

Photograph showing machinery wreckage at Station B in Oregon City. Several wheels and gear pieces can be seen throughout the image, broken off the main machinery mechanism. A man can be seen on the right side of the frame.

Photograph taken on railroad tracks, looking at tracks and a seated man in a small rail car. Wooden and gravel debris can be seen throughout the image, and a small wooden building can be seen at the left side of the frame on a hillside. Written on the negative is “0-338” and “July-3-1912.”

Photograph showing the interior of the high tension switch room at the Little Sandy River Dam. Multiple electrical units and insulators can be seen throughout the photograph. Written on the negative is “0354.”

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.