Photograph showing four men seated or standing next to a small creek in a wooded area. All the men look towards the camera, while the seated man near the center of the frame holds a crumpled newspaper on his lap. Written on the negative is “E301.09-O-170.” (Image note: see related images PGE 16-131.1, PGE 16-131.3, PGE 16-131.4, PGE 16-131.5)

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 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 looking across a dirt slide above the Clackamas River. A man can be seen standing on the hillside in the distance. The river is visible on the left side of the frame. Written on the negative is “Earth and loose rock slide below south fork, 12/17/20” and “E301.09-O-15.”

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 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 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 taken from a high point looking downward at a town of Detroit (Oregon) with several buildings. In the distance a hillside can be seen above the town, leading up to high ridge points. Several areas of burned trees can be seen above the town. Written on the negative is “Looking south at Detroit, Oregon – Nov 6 1920.”

Photograph taken from shoreline, showing Elk Lake during the winter with snow on the ground. In the distance, a man with a jacket and hat stands next to the water. Behind him are trees that appear to be recently burned. Written on the negative is “Looking north down Elk Lake, 11-5-20.” and “E301.09-O-4.”

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 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.”

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 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 showing the South Fork of the Clackamas River during a flood, taken from next to the river. On the left side of the frame is a rough cliff-face with fallen rocks. Written on the negative is “E301.09-O-43” and “21.”

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 three sawmill tractors at a temporary construction camp area, with a wooden water tower. A man is standing on top of the tower, and several other men can be seen in front of the tractors. Barrels and piles of wood are visible throughout the frame.

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 camp area next to a river, with several wooden and canvas buildings visible throughout the frame. A small wooden bridge crosses the river, on which two men stand facing the camera. Beyond the grouping of canvas tent cabins, smoke can be seen, likely from brush burning.

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 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 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 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 looking down a large pipe, showing the outline of a person.

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 looking upstream and downward at the Oak Grove powerhouse during construction. Wood and metal framework, and men working, can be seen throughout the site, with piles of dirt and lumber in the background. On the left side of the image is a metal bucket attached to a hook and pulley. In the background is the Oak Grove Fork of the Clackamas River.

Photograph, likely taken from Oak Grove Butte, showing Mt. Hood and ridges in the distance. Written on the negative is “E301.09-O-82” and “01.”

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 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.