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.

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.

Stockton Terminal & Eastern Railroad Alco S-1 diesel locomotive number 506 at the engine terminal in Stockton, California, on August 3, 1973. Built in 1942 (construction number 69687) as Western Pacific number 506 and purchased by Stockton Terminal & Eastern in 1968. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Stockton Terminal & Eastern Railroad Alco S-1 diesel locomotive number 507 at the engine terminal in Stockton, California, on August 3, 1973. Built in 1942 (construction number 69691) as Western Pacific number 507 and purchased by Stockton Terminal & Eastern in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.