Company store of the Hammond Lumber Company at Camp Number 10 at Kerry, Oregon, undated. Photo by Clark Kinsey.

Narrow gauge 0-4-2 construction locomotive Number 4 with a string of dump cars used in constructing the gun batteries at Fort Stevens, Oregon, undated. From the Oregon Historical Society Collection.

Narrow gauge construction train moving material to build a fill for the west gun battery at Fort Stevens, Oregon, March 3, 1897. From the Oregon Historical Society Collection.

Narrow gauge construction train moving material to build a gun battery at Fort Stevens, Oregon, February 18, 1897. From the Oregon Historical Society Collection.

Several narrow gauge locomotives moving construction material for the fortification of the west gun battery at Fort Stevens, Oregon in April 1897. From the Oregon Historical Society Collection.

A derrick has just lifted a narrow gauge locomotive off of a barge that will be used in constructing the gun batteries at Fort Stevens, Oregon in April 1897. From the Oregon Historical Society Collection.

A greenhouse next to the Great Northern mainline at Monroe, Washington in the 1920s.

Green River dam at Headworks, Washington, in December 1955. High water overtopping dam. Photo by J.M. Fredrickson . Other Subject Classes: dam, river

Green River dam at Headworks, Washington, in December 1955. Photo by J.M. Fredrickson. Other Subject Classes: dam, river

Green River Dam at Headworks, Washington, circa 1944. Photo by J.M. Fredrickson . Other Subject Classes: dam, river