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 a dirt road on a hillside with an active steam shovel. In the background are two vehicles on the road, with men visible at the far left side of the frame. Next to the steam shovel is a pile of dirt and rocks, and written on the machine is “Marion Shovel – Model 21.” Written on the negative is “E301.09-O-20.”

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 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 the South Fork of the Clackamas river, looking towards a large rocky cliff-face. A man can be seen walking on a log in the river, while three others sit on a rock extending into the water. Written on the negative is “E301.09-O-36.”

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 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 taken from dirt road looking downhill towards a temporary camp made up of canvas tents and wooden buildings. There is snow in the ground throughout the image, and in the background is a steep hillside with trees. Written on the negative is “E301.09-O-60.”

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 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 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 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 two men in hats and coveralls working with a generator component at the Oak Grove powerhouse. One man is facing towards the unit, while another looks towards the camera while facing towards the left. Wooden blocks can be seen under the rotor, which is on the ground.

Photograph, taken from a high angle, showing three men looking at the camera in a large wheel base. Two of the men are standing at the center, and one is sitting casually at the side. The standing men appear to be using a surveying tool on a tripod.

Photograph of Oak Grove Dam showing second intake unit generator and five employees in work clothing standing inside the machinery. The building in industrial, with large windows on all visible walls.