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 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.

Southern Pacific Railroad steam locomotive number 4451 at Santa Barbara, California in June 1947. SP 4451, a 4-8-4, hauls southbound passenger train No. 97 near Santa Barbara in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Southern Pacific Railroad steam locomotive number 4451 at Santa Barbara, California in June 1947. SP 4451, a 4-8-4, hauls southbound passenger train No. 97 meeting the northbound Daylight near Santa Barbara in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

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.

Stockton Terminal & Eastern Railroad General Electric (GE) 65-ton diesel locomotive number 11 at the engine terminal in Stockton, California, on August 3, 1973. Industrial switcher built in 1941 (construction number 13162) for use at the Savannah Ordnance Depot as United States Army number 7195. Purchased by Stockton Terminal & Eastern in 1955 and scrapped in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Stockton Terminal & Eastern Railroad General Electric (GE) 44-ton diesel locomotive number 12 at the engine terminal in Stockton, California, on August 3, 1973. Industrial switcher built in 1943 (construction number 18154) for the Atchison Topeka & Santa Fe as number 466. Purchased by Stockton Terminal & Eastern in 1961. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Stockton Terminal & Eastern Railroad General Electric (GE) 80-ton diesel locomotive number 22 at the engine terminal in Stockton, California, on August 3, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Stockton Terminal & Eastern Railroad General Electric (GE) 44-ton diesel locomotive number 25 at the engine terminal in Stockton, California, on August 3, 1973. Industrial switcher built in 1946 (construction number 28339) and purchased by Stockton Terminal & Eastern in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.