Photograph showing a group of men standing on large pipes. The men at the right of the frame look towards the camera, and are wearing hats with suit vests or dress shirts. They are Clark, Franklin T. Griffith, Fuller, Caldwell, and Osborne. Four men can be seen on the left side of the frame with tools, leaning towards the pipe work. A tunnel entrance can be seen in the background.

Photograph showing a log cabin with a group of people standing around the porch. To the left of the building of a parked automobile next to a smaller wooden building. Forest can be seen in the background. Written on the negative is “E301.09-O-255.”

Photograph showing five man standing next to a river and a small wooden shed structure. In the background, across the river, is a wooded hillside. From left: Franklin T. Griffith (President), O.B. Caldwell (Vice President), G.L Estabrook at far right (Secretary and Assistant Treasurer).

Photograph showing horse teams grading a dirt road cut. On the right side of the image is a forested hillside, and one the left is a loose dirt hillside. Written on the side of the negative is “E301.09-O-231.” (Image note: discoloration visible on the right side of the negative).

Photograph showing a large generator component being moved with steel cables inside the Oak Grove powerhouse. In the background, a man can be seen looking upwards, while another is visible at the front of the frame looking towards the camera.

Photograph showing a group of people standing on a road while looking towards the camera (including Franklin T. Griffith, President). The road and hillside is covered in rocks, and in the background is a large pile of cut trees.

Photograph taken from a high angle looking downward at floor construction for the Oak Grove powerhouse. Wood, pipes, and metal framework can be seen in the floor, while workers can be seen throughout the image. A man is standing on a section of floor with a wooden circle, next to a tripod total station (Image note: deterioration can be seen on the negative along the bottom edge).

Photograph showing a railroad train towing several large pieces of pipe on attached railroad cars. The train is traveling through an open area surrounded by dense forest, and four men can be seen in the frame in between the camera and train.

Photograph showing several large lengths of conduit pipe on the flat bed of a train car. A man in a hat stands inside the last piece of pipe, facing towards the camera. In the background is a dense forest, and pieces of wood and debris can be seen on the ground throughout the image.

Photograph showing a group of forward facing people, taken next to an automobile. The automobile is facing to the side, and has open air seating. Tent cabins can be seen in the background. Written on the negative is “E301.09-O-235” and “R-12.” (Image note: significant discoloration can be seen along the right side of the negative).

Photograph showing a group of men excavating a hillside at the Oak Grove powerhouse site. Next to the group are two large metal buckets, which are attached to a hook and pulley.

Photograph showing a two-story wooden building in snow conditions. A truck can be seen in the snow at the front of the building, while a steep wooded hillside is visible in the background.

Photograph showing a small wooden cabin in snow conditions, looking upward from downhill. A person can be seen standing on a covered porch with several icicles hanging from the roof line.

Photograph showing an incomplete electrical bay at the Oak Grove dam, with several man visible throughout the frame. Electrical conduits can be seen on the floor, with wood and steel on the supporting walls. A dirt hillside can be seen in the background behind the far wall.

Photograph showing an excavated dirt area (Frog Lake) with tree stumps, cut timber, and a railroad track. Trees can be seen at the edge of the dirt, with forested mountains in the distance.

Photograph showing men standing on a wooden platform looking at the camera. On top of the platform is a makeshift ladder leading to a pulley and rope. Written on the negative is “E301.09-O-239” and “R-8.”

Photograph showing a wooden sawmill building at Davis Ranch taken in the snow. Logs can be seen on the ground in front of the building. Smoke or steam is coming out of several pipes on the building, and men can be seen standing in and in front of the structure. Written on the negative is “E301.09-O-336.”

Photograph showing a wooden bridge with an automobile, two horses, and men on top of the structure. Snow can be seen throughout the image.

Photograph showing five men in boots and work jackets facing forward, with a small railroad car on railroad tracks. Left to right: W.L Sharp, R.C. Mcllwee, H.A. Rands, C.P. Dunn (Image note: some discoloration visible at right side of negative).

Photograph showing horses, Russell 15-30 steam tractors, and wooden planks in a dirt clearing. In the background is a wooded hillside. Written on the negative “E301.09-O-248.”

Photograph showing a wooden dam being built across a flowing river (Oak grove Fork of the Clackamas?). Several individuals can be seen throughout the frame, and piles of wood are visible at either side of the dam structure. Across the river is a recently logged area with fallen timber.

Photograph showing a cement dam on the Oak Grove Fork of the Clackamas river, captured immediately after closing for the first time. Water can be seen at the base of the dam to the front, with four men visible to the right. Uphill from the dam structure, other wooden structures can be seen. (Image note: see related image PGE 16-927).

Photograph showing a man standing next to a wooden “clockhouse” building with snow. He is wearing winter clothing, a hat, and is holding a rifle. Downhill from the building is the Clackamas river. Written on the negative is “Clockhouse at Big Bottom 12/15/20.” (Image note: see related image PGE 16-37.”

Photograph looking downward the Clackamas River in the narrows area near Three Lynx. Trees and rocks line the river on both sides, and wooded hills can be seen in the background. Written on the negative is “E301.09-O-318.”

Photograph showing a caterpillar machine and men standing in a clearing of logs and trees. The men on the right side look towards the caterpillar, which is being driven by a man on a bench seat, who is bent to his left. Written on the negative is “E301.09-O-172.” (Image note: discoloration is visible on right and bottom edges of negative).

Photograph taken from a side angle showing a man riding a caterpillar machine in the snow, which is attached to a trailer. On the trailer is lumber, wooden crates, and other supplies. Written on the negative is “E301.09-O-361.”

Photograph taken from a side angle, showing an incomplete wooden trestle bridge crossing a dirt ravine. A small creek is running downhill and under the bridge, while trees and mountains are visible in the distance. Two men can be seen standing on the left side of the bridge.

Photograph showing a canvas and wooden cook house building in the snow at camp #9. The building is on a raised wooden platform. In the background is a wooded hillside, with some logged trees visible. Written on the negative is “E301.09-O-329.”