Photograph looking westward at recently logged open area. Standing water with floating logs can be seen in the cleared area, along with several horse teams towards the front of the frame.

Photograph looking up towards a rounded mountain, with trees and the foreground. Written on the negative is “Lowe meadow point elev. 5113, 12/14/20.”

Photograph showing a forward facing man in a hat and overalls standing in front of a wooden cabin. In the background is a wooded hillside. Written on the negative is “E301.09-O-251.”

Photograph showing two men standing next to an automobile, which is parked on a dirt hillside. To the right of the automobile is a stone railing extending down the hillside.

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 taken from a side angle showing a raised wooden building in a clearing at “straights flat terminal.” Piles of cut wooden plants can be seen next to the building. Written on the negative is “E301.09-O-298.”

Photograph taken from across the Clackamas River showing two small wooden “clockhouse” buildings. Snow can be seen throughout the image, one the ground and trees. Written on the negative is “new and old clockhouses at Big Bottom 12/15/20.” (Image note: see related image PGE 16-35)

Photograph showing the northern side of the wooden North Fork trestle bridge, before completion. Behind the bridge is a loose dirt hillside with trees at the top.

Photograph taken from a side angle showing a wooden trestle bridge with an open gap before the installation of a steel span. Rocks and dirt can be seen in the foreground, and a hillside with bare trees behind the bridge. Written on the negative is “E301.09-O-296.”

Photograph looking downward showing four wooden log buildings in a recently cleared field. Stumps and logs are visible throughout the field, beyond which is a forest. The building on the left is two stories, while the others appear to be one level. Written on the negative is “Oak Grove ranger station, 12/8/20” and also “E309.09-O-10.” (Image note: see related image PGE 16-298).

Photograph showing the top surface of a wooden trestle bridge and a dirt road, with a wooden flume and dam structure visible in the distance (Cazadero Dam). In the background, forested hillsides can be seen above the Clackamas River. Written on the negative is “E301.09-O-23” and “32.”

Photograph showing an overhanging rocky cliff with a waterfall next to a flowing river (likely the Clackamas River). In the distance is a forested hillside visible above the river. Written on the negative is “Overhanging cliff near Roaring River Ranger Station 12/17/20” and “E301.09-O-16.”

Photograph showing a group of people standing next to a small wooden building at Austin Hot Springs. The Clackamas River can be seen next to the building. Written on the negative is “E301.09-O-25” and “45.” (People included: Crane, Caldwell, Sherrard).

Photograph showing men and horses standing on a trail cutting through a rocky slope. They are facing away from the camera and mounted. Written on the negative is “E301.09-O-27” and “43.” Image note: “Sherrard, Cravey, Caldwell” written on negative sleeve).

Photograph showing three men wearing hats on a rocky point at Oak Grove Butte. Mount Hood is visible in the distance on the right side of the frame, along with several other points and ridges. Written on the negative is “E301.09-O-24.” and “46.”

Photograph showing a party of men standing in a field of tall grass with horses. A forest is visible behind the group. Written on the negative is “Party at Three Links, 5-4-20.”

Photograph showing men riding horses along a hillside trail. One of the men looks back towards the camera, while the others face forward on their horses, heading away. The hillside is steep with look rocks and foliage. Written on the negative is “E301.09-O-40” and “44.” (Packtrain: Harman, Peck, Caldwell, Ransom.)

Photograph taken from a high angle looking downward at the Oak Grove powerhouse site, showing the first cement being placed. Several men are gathered around the bottom section of a wooden chute extending towards a floor with metal framework. The Oak Grove Fork of the Clackamas River is visible in the background. (Image note: deterioration can be seen on the bottom left corner of the negative).

Photograph taken from a high angle and looking downwards at construction of the Oak Grove powerhouse, with the Clackamas River visible at the left of the frame. Metal and wood framework can be seen throughout the image, with numerous workers and lumber piles also visible. A railroad track and dirt road cut through the hillside and extend into the distance.

Photograph showing the Oak Grove powerhouse during construction. The Oak Grove Fork of the Clackamas River can be seen running alongside the building area, while a large pipe and possible flume extend uphill from the structure. A wooden trestle is also visible on the hillside above the building.

Photograph taken from a high angle looking downward at the Oak Grove powerhouse during construction. The Oak Grove Fork of the Clackamas River can be seen next to the building, with the Three Lynx camp visible on a hillside in the distance.

Photograph showing metal and cement building framework, taken from across the Oak Grove Fork of the Clackamas River. Behind the structure is a dirt hill, with a wooden bridge and dirt road visible near the top of the frame.

Photograph showing the Clackamas River (Oak Grove fork?) looking downstream from the powerhouse site for the Oak Grove dam. Snow can be seen on the ground and trees throughout the image. Written on the negative is “E301.09-O-309.”

Photograph showing men standing next to a round wooden structure during construction at the Oak Grove powerhouse. Two of the men lean on the structure while looking towards the camera. Wooden and metal framing can be seen throughout the image.

Photograph showing a man facing the camera wearing winter clothing, standing outside a small log cabin in the snow. The roof of the cabin has a layer of snow, and the ground in front has visible footprints from the man. Written on the negative is “Ranger cabin at Elk Lake, 11-5-20.”

Photograph showing two wooden buildings in a cleared field area with snow on the ground. The building in the center of the frame is a log structure with two stories, while the other is a single story log structure. At the right side of the frame is a recently cleared area of stumps. In the background is a hillside with trees and snow. Written on the negative is “E301.09-O-363.” (Image note: see related image PGE 16-19).

Photograph showing a men at a sawmill in a forested area at construction camp. A tractor can be seen in the background, likely being used to run a motorized saw. Other saw blades and belt drives can be seen in the image.

Photograph, likely taken from Oak Grove Butte looking southeast, showing mountains and ridges in the distance. Visible is North Pinhead Butte, South Pinhead Butte, and West Pinhead Butte. Written on the negative is “E301.09-O-88” and “8.”