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 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 man welding at the construction site of the Oak Grove powerhouse. He is facing towards a metal structure, and is wearing a hat, welding goggles, and gloves. In the background, several other men look towards the camera.

Photograph showing six men working next to a large metal column at the Oak Grove powerhouse. Around the group are piles of cut lumber, tools, and metal and wood building framework. A recently logged hillside can be seen in the background. (Image note: some discoloration can be seen along the left side of the negative).

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 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 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.

Portrait of a man with a mustache. He is wearing glasses, a bow tie, and a jacket with a ribbon pinned to the lapel. Abt was a pediatrician and the first president of the American Academy of Pediatrics. The text “Dr. Abt” is handwritten on the negative and is visible on the right side of the image.

Half-length portrait of eight unidentified people, all wearing life jackets, gathered on the deck of the lighthouse tender Manzanita.

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 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 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 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 showing the concrete dam structure at Oak Grove during construction. Around the dam are several wooden structures, including a possible flume. On the left side, a wooden ladder leans again the dam.

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 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 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 cement dam on the Oak Grove Fork of the Clackamas River, with a noticeable water pool in front of the dam structure. A man seated on a platform can be seen over the water on the right side of the image, with submerged pieces of wood to the left. Negative sleeve notes “less than one hour after filling.” (Image note: see related image PGE 16-903).

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 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 looking upstream, below proposed upper dam site at Cazadero Dam/Station G. A railroad track and flume can be seen running into the distance around a hillside, and two possible construction vehicles are visible. The river can be seen on the left side of the frame.

Portrait of a man posing with a hockey stick in the street outside a building. He is wearing a Spalding Aces uniform, hockey gloves, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925. The name “Coleman” is written on the negative and is visible on the right side of the photograph. Image note: Photograph shows discoloration due to deterioration of the negative.

Portrait of a young man posing with a hockey stick on the sidewalk outside a building. He is wearing a Spalding Aces uniform, hockey gloves, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925. The name “Lane” is written on the negative and is visible at the bottom of the image.

Portrait of a smiling man posing with a hockey stick on the sidewalk outside a building. He is wearing a Spalding Aces uniform, hockey gloves, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925. The name “McCuaig” is written on the negative and is visible on the right side of the image.

Portrait of a man posing with a hockey stick on the sidewalk outside a building. He is wearing a Spalding Aces uniform, goalie’s pads, hockey gloves, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925. The name “Miller” is written on the negative and is visible on the left side of the image.

Portrait of an unidentified man posing with a hockey stick in the street near a building. He is wearing a Spalding Aces jersey and hockey gloves, shorts, leggings, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925.

Portrait of a man posing with a hockey stick on the sidewalk next to a building. He is wearing a Spalding Aces uniform and hockey gloves and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in the 1925. The name “Alexander” is written on the negative and is visible on the left side of the image. Also see image No. 371N0021.

Portrait of a man posing with a hockey stick on the sidewalk outside a building. He is wearing a Spalding Aces uniform, hockey gloves, and skates. The Spalding Aces were part of the Portland Amateur Ice Hockey Association in 1925. The name “Coleman” is written on the negative and is visible on the left side of the image.