Photograph taken to the side of a wooden bridge across the Sandy River. Two men work at the top of the bridge, with two other individuals standing further in the distance. At the base of the bridge is ferns and other plant life.

Photograph of Salem warehouse building with automobile parked outside. A paved street can be seen in the front of the frame, and another building is visible at the left.

Photograph showing a partially completed suspension bridge over the Clackamas river near the River Mill Dam site. Cliffs and trees can be seen throughout the image. Written on the negative is “Dec 22, ‘09 – PES 2009.”

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 a bridge over the Clackamas River, taken from river level looking upward. In the background, a wooden suspension bridge can be seen across the cliffs behind the larger front bridge. Written on the negative is “Dec 22, ‘09 PRD 2007.”

Photograph looking downhill at the Clackamas River, at a potential future dam site for the River Mill Dam. Several cut trees can be seen on the closest hillside, and a rocky ledge is visible across the river. Written on the negative is “Dec 22, ‘09, PES 2013.”

Photograph looking across the Clackamas River, of a potential dam site for the future River Mill Dam. A rocky cliff-face can be seen across the water, as well as tree at the top of the frame. Written on the negative is “Oct 22, ‘09, PES #2004.”

Group portrait of men in baseball uniforms, with one man in a suit. The front row of men is seated, while the back row stands. In the background is a field and trees. A round sign in front of the seated row reads “Portland Electric Power Co. baseball” with a triangle logo and “Club” written in the middle.

Interior photograph of room 621 in the Portland Electric Building, showing large white dispatch board with system stations and substations mapped. A white sink can be seen in the corner. Building located at 621 Southwest Alder street in Portland.

Photograph of the Portland Electric Building taken from a high angle. Pedestrians and automobiles line the streets, on which multiple street car tracks can be seen. Building located at 621 Southwest Alder street in Portland.

Photograph of Portland bus #54, taken in front of front of large wooden house.

Photograph taken at a high vantage point, looking north, of paper mills in Oregon City, showing railroad tracks and the Willamette River. The Oregon City Bridge (Arch Bridge) can be seen in the distance crossing the river. Industrial buildings line the river on the opposite banks. Written on the top of a building is a large sign with “Crown Willamette Paper Company” and “Hawley Pulp and Paper Company.”

Photograph of Oregon city car #1126, taken in unidentified train yard. Electrical lines and wooden pole also seen in the image, with a wooden house in the background.

Photograph of Oregon city car #1096, taken in unidentified train yard. Electrical lines and wooden pole also seen in the image, with a wooden house in the background.

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.”

Photographs showing six works in tunnel at Oak Grove. One man looks at the camera, while another uses a pick ax to examine a white vein in the rock wall. The four men at the top of the frame stand on temporary scaffolding.

Photograph looking down an underground tunnel. Lights and a large pipe run along the right wall into the distance. A train track is visible on the floor, as well as various pieces of debris against the left wall.

Photograph looking across the Clackamas River at camp #3, taken from slightly uphill. Several small wooden structures can be seen above the river bank, next to a large pile of logs. In the background is a wooded hill. Written on the negative is “E301.09-O-108” and “R-2.”

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 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 showing a damaged railroad train and railroad car on a rocky hillside, taken from a side angle. Wooden railroad ties can be seen in a pile in front of the train. Written on the side of the railroad train is “D.I.RY. Co.”

Photograph taken from a side angle showing a roofed pipe traveler device, in a dirt ditch and area recently cleared of trees. One man can be seen in the pipe traveler, while another stands at ground level.

Photograph taken from a side angle showing a pipe traveler on a 68% grade, on the east slope of Cripple Creek knoll. It is traveling along a section of pipe, and appears to be emitting steam. Several men can be seen standing at ground level next to the pipe.

Photograph taken from a side angle, showing a man welding at the construction site of the Oak Grove powerhouse. He is facing towards a metal structure, and is wearing a hat, welding goggles, and gloves. In the background, several other men look towards the camera.

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 looking down a rocky dirt roadway at two automobiles in the distance driving towards the direction of the camera. To the right side of the road is a rock cliff face, and to the left appears a downhill drop-off. Written on the negative is “E301.09-O-38” and “14.”

Photograph showing small wooden building with piles of cut lumber in front of a steep logged hillside. On the right side of the frame, the Clackamas River, or Oak Grove Fork can be seen, and snow is on the ground throughout the image. Written on the negative is “E301.09-O-369.”

Photograph showing pipes with concrete cradles at Frog Lake, in a newly logged area. A railroad track and small wooden bridge can be seen in the background.