Southern Pacific Railroad steam locomotive number 1901 at Portland, Oregon, circa 1910. SP 1901, a 2-6-2T in switching service at Portland circa 1910. Photo by K. Leavens, J.M. Fredricson collection. Other Subject Classes: steam locomotive, switcher locomotive.

Southern Pacific Railroad steam locomotive number 2271 with passenger train No. 501 running down a city street circa 1920. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Southern Pacific Railroad steam locomotive number 3025 at Los Angeles, California on August 06, 1973. SP 3025, a 4-4-2 Atlantic-type locomotive on display in Los Angeles in 1973. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display.

Southern Pacific Railroad steam locomotive number 3611 at Davis, California on June 18, 1947. SP 3611, a 2-10-2, leads an extra freight train at Davis in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train.

Southern Pacific Railroad steam locomotive number 3677 at Sparks, Nevada on July 18, 1941. SP 3677, a 2-10-2, parked at the Sparks roundhouse in 1941. Photo by Jerry R. Hanson, J.M. Fredricson collection. Other Subject Classes: steam locomotive, roundhouse, turntable.

Southern Pacific Railroad steam locomotive number 3909 at Canby, Oregon in June 1947. SP 3909, a 4-6-6-2 cab-forward leading the first section of freight train No. 667, moves past the water column at Canby in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, water column.

Southern Pacific Railroad steam locomotive number 4007, circa 1930. SP 4007, a 2-8-8-2 cab-forward, moves through a freight yard with railroad crews standing nearby circa 1930. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight yard, railroad crew.

Southern Pacific Railroad steam locomotive number 4205, circa 1930. SP 4205, a 4-6-6-2 cab-forward with freight train No. 663, taking water. Photo by Phil Seeley, J.M. Fredricson collection. Other Subject Classes: steam locomotive, freight train, water column.

Southern Pacific Railroad steam locomotive number 4360 at San Francisco, California in November 1953. The crew of SP 4360, a 4-8-2, waits for a highball at the station in San Francisco in 1953. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train, railroad crew.

Southern Pacific Railroad steam locomotive number 4449 at San Francisco, California in April 1953. SP 4449, a 4-8-4, parked at the station in San Francisco while in service on the Daylight trains to Los Angeles in 1953. Photo by W.E. Miller, J.M. Fredricson collection. Other Subject Classes: steam locomotive, locomotive facility.