Photograph showing damage to a fenced area due to the 1964 Christmas Flood (likely in the Clackamas River area). An man-made canal can be seen on the right side of the frame, with damaged fencing running along the river to the left. Much of the fencing appears to have fallen downhill towards the rapidly moving river. In the foreground, two men in long jackets face away from the camera. (Image note: see related image PGE 64-606-8.2).

Photograph showing damage to a hillside, fence, and canal. At the left side of the frame is a rapidly flowing river (likely the Clackamas River), with a deteriorated hillside on its banks.

Photograph showing a spillway structure during the 1964 Christmas flood (taken December of 1964). Water can be seen rapidly spilling down the structure, with a small building visible at the far side of the river. High water levels can be seen upriver, in addition to forested hillsides and trees.

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6010."

Negative of a photographic postcard showing the Estacada Bridge over the Clackamas River in Estacada, Oregon. There are trees on both banks of the river. Handwriting on negative reads, "Clackamas River and Bridge - Estacada, Ore. Christian 11-6006."

Negative of a photographic postcard showing the Mill River Power Plant at the River Mill Dam in Estacada, Oregon. Water from the Clackamas River goes over the spillway in the background. Power lines carry electricity from the plant. Handwriting on negative reads, "Mill River Power Plant - Estacada, Ore. Christian 11-6007."

Photograph looking across a body of water showing five children running on a path. Another wider path can be seen to the right of the group, and small wooden bridge can be seen further back over the water. Trees and ferns are visible throughout the image.

Photograph looking across a body of water showing four children running on a waterside path. Trees and ferns can be seen a hillside above the path.

Photograph, looking towards the powerhouse structure at the Oak Grove Dam. Large pipes can be seen behind the building, extending up a large hill towards a tank at the top. To the left of the stone building, a retaining wall and metal frame structure can be seen. Written on the negative is "49-289."

Manuscript in which the author captured a young otter and observed it.

Photograph showing the Faraday flume for generating Station G. Below the flume structure, the Clackamas River can be seen, with several small waterfalls flowing off the hillside above.

Photograph of second unit powerhouse at Oak Grove taken from above the Clackamas River. In the distance are several small buildings and a dirt road on a hillside. Forested hills are visible in the background.

Photograph from Oak Grove project showing construction of unit plant and penstock. A brick building can be seen at the base of a dirt hill, with a small round building visible at the top. The Clackamas River runs along side the building and supporting wall.

Photograph looking across the Clackamas River at camp #3, taken from slightly uphill. Several small wooden structures can be seen above the river bank, next to a large pile of logs. In the background is a wooded hill. Written on the negative is “E301.09-O-108” and “R-2.”

Photograph looking up the Clackamas River, taken during a flood. On the right side, a cut road can be seen crossing the hillside, with several small flowing waterfalls. Written on the negative is “E301.09-O-46” and “19.”

Photograph taken from above showing the Clackamas River and forested mountains.

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.

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 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 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 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 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 flowing Clackamas River, looking upstream towards a small group of buildings on the far shore. Written on the negative is “E301.09-O-352.” (Image note: native sleeve indicates image taken from lower end of roaring river bluff).

Photograph showing the Clackamas River flowing at the base of a rocky cliff. Disturbed dirt and debris can be seen on the left side of the image, falling towards the water. Written on the negative is “E301.09-O-136” and “Je-2-22.”

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 a man in a cart attached to a cable crossing the Clackamas River at Three Lynx. He is facing forward while looking slighty to the side, with his hands in his lap. Trees and rocks can be seen on the far shore. Written on the negative is “E301.09-O-178.”