SP&S diesel locomotive Number 33, Baldwin VO-1000 with the Portland Yard drag, undated.

SP&S diesel locomotive Number 50, an American Locomotive Company (ALCO) RS-1, with a caboose at Portland, September 1955. John T. Labbe photograph.

SP&S diesel locomotive Number 750, an EMD E7A, departing Portland with the "Empire Builder" for Spokane on September 1948. Photo by Frank Mckinlay.

SP&S EMD F3A diesel locomotive Number 800 in Union Station heading an eastbound passenger train, undated.

SP&S diesel locomotive Number 800, an EMD F3A with passenger train departing Union Station, July 10, 1947, from the Phillip C. Johnson Collection.

SP&S trestle across Doane's Lake, July 12, 1906, from the Oregon Historical Society Collection.

Sketch of proposed new Union Depot, April 1882, from the Oregon Historical Society Collection.

SP&S East Portland yard; east side of the yard from Southeast Union Avenue, undated, from the Oregon Historical Society Collection.

New Mid-Century Empire Builder inaugural eastbound run from Portland, Oregon, June 3, 1951, locomotive engineer Rudolph Wachter next to SP&S EMD diesel locomotive Number 750. Photo by Ackroyd Photo.

SP&S conductor, engineer and fireman comparing time of their watches by Class F3A Number 801, August 8, 1950.