Photograph showing an excavated dirt canal, with visible water at the bottom level. In the distance, works can be seen along the sides of the canal, and a tunnel entrance is visible in the background. Written on the negative is “B.S-22.”

Photograph showing two men with a horse towing a metal cart on a railroad track. The horse is attached to the cart via a harness, with the reins being held by one of the individuals. In the background are trees and a hillside.

Photograph showing construction of the tunnel at the Big Sandy Dam (likely the Marmot Dam). A man stands next to a machine next to the tunnel entrance, which is emitting a large plume of steam. Wood and gravel is visible throughout the image. Written on the negative is “B.S. 48.”

Photograph showing a wooden flume bridge crossing the Little Sandy River near the Little Sandy Dam. Five men in work wear stand on pieces of wood next to the flume while looking at the camera. Water can be seen under the bridge in the background. Written on the negative is “E301-03396.”

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 showing four seated men in a automobile, taken on a trip to the Big Bottom area. In the background is a sort road and a hill made up of dirt and rocks. Written on the negative is “E301.09-O-170.” (Image note: small area of discoloration visible at the far right edge of the negative. See related images PGE 16-131.2, PGE 16-131.3, PGE 16-131.4, PGE 16-131.5).

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 looking uphill towards a log cabin. A man stands on the front porch of the structure, while another is standing downhill with a horse while looking towards the camera. Logs and stumps can be seen downhill front the cabin.

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 from a high angle showing a building on pillars in the snow (saw mill?). A men can be seen standing at the edge of a wooden deck looking away from the camera. Written on the negative is “E301.09-O-294.”

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 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 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 showing temporary at construction camp in the Oak Grove area. Several tent cabins and wooden buildings can be seen in the distance in front of wooded hills. At the right side of the image, several men and a tractor are on a short wooden bridge. Written on the negative is “E301.09-O-333.”

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 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 construction of a wooden platform at a temporary work camp in a wooded setting. Tent cabins can be seen in the background, and men can be seen throughout the frame. Written on the negative is “E301.09-O-364.”

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 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 workers with a tacoma logging engine in snow conditions on a road. In the background is a dense wooded area. (Image note: negative sleeve indicates “on road below sta F.L. 340”).

Photograph showing a logging donkey machine with two men on road, taken near ground level. To the left of the machine is a loose dirt and rock hillside.

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 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 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 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 taken from the front, looking at a pipe traveler moving along a track in a excavated dirt area. Two men ride at the top of the unit, while others can be seen below on the ground. A large metal pipe is being held in the unit, which appears to be attached to a pulley cable system.

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 taken from a side angle showing a pipe traveler machine being tested on a short length of pipe, in a recently cleared dirt area. Two individuals can be seen standing on top of the device.