Photograph showing a camp at Big Sandy Dam, made up of wooden buildings surrounded by trees. Electric lines and utility poles can be seen throughout the image. Written on the negative is “339 Big Sandy Camp.”

Photograph showing a camp at Big Sandy Dam, made up of wooden buildings surrounded by trees. The buildings are in a row on a gradual incline, and piles of wood and cut trees can be seen. Written on the negative is “340 Big Sandy Camp.”

Photograph of the Big Sandy Dam site (likely the Marmot Dam), showing a wooden flume with suited individuals standing in the foreground. At the top of the hillside, a wooden building and platform can be seen. Written on the image is #34, B.S dam site, looking down stream, Oct 14, 1911.” (Image note: glass negative broken at lower right corner).

Photograph showing a temporary wooden dam at the Big Sandy Dam site (likely the Marmot Dam). Two workers stand on the wooden structure while looking upward at the camera. In the background, sandbags, woodpiles, and work tools can be seen. Written on the negative is “#33, Spillway in tempy dam at Big Sandy, Oct 21, ‘11.”

Photograph of river showing tunnel entrance and wooden structures along water edge. Wooded hillsides are seen at both sides of the river. Two men stand at the tunnel entrance.