Photograph showing the exterior of Station B in Oregon City. The flowing Willamette River can be seen at the base of the stone building. Behind, utility poles and another building can be seen at the top of a hill.

Photograph taken from a distance showing Station B in Oregon City. Numerous buildings are visible throughout the frame, both on the near and far shores of the Willamette River. Several large smokestacks can be seen on multiple buildings.

Photograph taken from a high angle showing the exterior of Station B in Oregon City. Willamette Fall is visible at the center of the frame, and a building is on the left side. Across the water, several building can be seen on a wooded hillside.

Photograph showing a dam at Willamette Falls in Oregon City. In the center of the frame is Willamette Falls, with water cascading down. In the distance across the water, buildings can be seen along a hillside.

Photograph showing a dam at Willamette Falls in Oregon City. In the center of the frame, water cascades through an opening between a building and dam structure. Numerous other buildings and utility poles can be seen throughout the image.

Photograph showing a dam at Willamette Falls in Oregon City. Water flows past a rough wooden wall in the center of the frame. On the left a power plant building can be seen, with out structures further up the hill in the background.

Photograph showing construction at Cazadero Dam. The Clackamas River can be seen flowing through the bottom of the dam, and trees are visible on the hillside in the distance.

Photograph showing the lower dam site at Cazadero Dam/Station G, looking downriver. Forested hills can be seen in the distance.

Photograph showing construction at Cazadero Dam. The Clackamas River can be seen flowing on the right side. Ice formations are on the hillside to the left, and snow and frost can be seen on the wooden dam structure.

Photograph of the Cazadero Dam taken in front of the spillway. Water flows over the ledge into a pool at the base, and another stream of water can be seen spilling down on the right side of the frame. The stacked wooden dam structure is visible to the left of the main spillway.

Photograph taken from a side angle, showing the flume at the Cazadero Dam/Station G. Below the wooden flume is a dirt hillside with rocks, and a long wooden building can be seen in the background on the right side of the frame.

Photograph showing the flume at Cazadero Dam/Station G during a flood. Rapidly moving water is visible in the Clackamas River below the flume, and a wooden building can be seen on a hillside above.

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 showing water cascading down Willamette Falls in Oregon City. Industrial buildings can be seen just above the falls, with a rocky cliff and houses visible in the background. Above the waterfall is a spillway. Written one of the of large industrial buildings is "Publishers Paper Co."

Photograph showing the Clackamas River in the River Mill area, with numerous “islands” and cliffs. A wooden suspension bridge can be seen spanning two cliffs near the center of the frame, with numerous wooden buildings visible in the distance. Written on the negative is “#58M. 8-12-10.”

Photograph showing the construction of the spillway at the River Mill Dam. At the left side of the frame, a portion of a wooden suspension bridge can be seen. Behind, a railroad bridge spans the space between two cliffs, beyond which wooden buildings are visible. Written on the negative is “#84M. 1-28-11.”

Photograph looking across the Clackamas River, of a potential dam site for the future River Mill Dam. A rocky cliff-face can be seen across the water, as well as tree at the top of the frame. Written on the negative is “Oct 22, ‘09, PES #2004.”

Photograph of the Clackamas River looking upstream, near the River Mill Dam.

Photograph of a train crossing the Sandy River bridge at Dodge Park, Bull Run. A total of eight passenger train cars can be seen crossing the trestle bridge, under which river rocks and water can be seen.

Photograph showing construction at the Big Sandy Dam (likely the Marmot Dam). Several workers are visible on top of the wooden dam structure next to the Sandy River. Uphill are several small wooden platforms and buildings. Written on the negative is “BS-20.”

Photograph showing the Big Sandy Dam (likely the Marmot Dam) spillway with flowing water, taken looking upriver. A cement divider can be seen at the top of the spillway, in front of a small wooden structure and platform. Written on the negative is “B.S. 52.” (Image note: discoloration visible at right side of image).

Photograph showing a temporary work camp built on the Oak Grove Fork of the Clackamas river during the Oak Grove construction project. Several white tents can be seen across the water, in front of a thick forest of pines. In the foreground, stumps and logs can be seen along the waters edge.

Photograph showing slowing water and logs on the Clackamas River (Oak Grove Fork?), upstream from the potential site for the lower dam. Written on the negative is “Upstream from Lower Damsite at Intake, 5-4-20.” (Image note: numerous scratches are visible on the negative).

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.”

Photograph taken from above showing a snow laden landscape. On the right side of the frame a cluster of buildings can be seen (headquarters camp), and on the left is the Clackamas River.

Photograph looking across the South Fork of the Clackamas River, towards camp #2 on the opposite shore. A row of tent cabins, and several small wooden buildings can be seen. In the background is a forested hillside.

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 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).