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 view of officers quarters and other buildings at Fort Stevens, Oregon, 1906. Photo by Frank Woodfield.

A view of a ten inch disappearing costal artillery gun at Fort Stevens, Oregon, undated

Narrow gauge railroad using small steam locomotives and dump cars of large rock at Fort Stevens, Oregon with rock used in the Columbia River South Jetty, undated. Photo by Kiser Photo Company.

Narrow gauge railroad using small steam locomotives and dump cars of large rock at Fort Stevens, Oregon with rock used in the Columbia River South Jetty, undated. Photo by Kiser Photo Company.

Narrow gauge railroad using small steam locomotives and dump cars of large rock at Fort Stevens, Oregon with rock used in the Columbia River Jetty, undated. Photo by Kiser Photo Company.