Sperry flour mill remains after demolition at Tacoma, Washington, on July 02, 1973. Photo by J.M. Fredrickson. Other Subject Classes: building, demolition.

Southern Railroad depot at Chattanooga, Tennessee, in July 1978. Photo by J.M. Fredrickson. Other Subject Classes: depot.

Southern Pacific Railroad tunnels at Donner Summit, California on August 27, 1975. Waiting for a westbound extra freight train at Donner Summit in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, tunnel.

Southern Pacific American Locomotive Company type PA 6007 along with another type PA after cutting off the inbound Southern Pacific passenger train "Cascade" at Portland Union Station in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Depot-Passenger.

Southern Pacific depot at Klamath Falls, Oregon, undated. Photograph by Norm Keyes, from the Norm Keyes Collection.

Southern Pacific depot at Klamath Falls, Oregon, undated. Photograph by Norm Keyes, from the Norm Keyes Collection.

Southern Pacific depot at Klamath Falls, Oregon, undated. Photograph by Norm Keyes, from the Norm Keyes Collection.

Southern Pacific and Oregon-Washigton Railroad & Navigation Company original Steel Bridge over the Willamette River; the first steel bridge across the Willamette River, undated, from the Oregon Historical Society Collection.

South Prairie, Washington, circa 1890. Drawings of town, coal bunkers, surrounding facilities, Northern Pacific station, mainline. Copy from Burnett book, J.M. Fredrickson collection. Other Subject Classes: town scene, coal bunker, station, coal bunker, track

South Prairie, Washington, circa 1890. Drawing of town, Northern Pacific station, tracks. Copy of postcard. J.M. Fredrickson collection. Other Subject Classes: town scene, station, track