Soo Line Railroad Company depot at Cabott, WI, circa 1925. Soo Line depot Cabott, Wisconsin. J.M. Fredrickson collection. Other Subject Classes: depot

Soo Line Railroad Sheyenne River viaduct looking south bound at Valley City, North Dakota, on May 17, 2003. Photo by GJ Werkema. Other subject classes: bridge, viaduct

Soo Line tower at Minot, North Dakota, undated. Soo tower at the rail line crossing, photograph by Harold Hall, from the Norm Keyes Collection.

South portal of Great Northern Railway tunnel at Seattle, Washington. South Portal and interlocking. Other subject classes: Tunnel Portal

South Prairie Hotel in South Prairie, Washington, circa 1900. Frame two-story hotel with large group of children and adults. J.M. Fredrickson collection. Other Subject Classes: hotel, people,

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

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

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.

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.