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.

Stockton Terminal & Eastern Railroad center cab diesel-electric at engine terminal in Stockton, California, on August 3, 1973. Photo by J.M. Fredrickson. Other Subject Classes: locomotive facility, switching locomotive.

Stockton Terminal & Eastern Railroad 4-4-0 steam locomotive number 1 at Travel Town in Los Angeles, California, on August 6, 1973. Built in 1864 by E.S. Norris in Lancaster Pennsylvania and purchased by STE in 1914. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display.

Tidewater Southern Railway Alco S-2 diesel locomotive number 745 parked at Sacramento, California, on August 3, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive, bay window caboose.

Union Pacific Railroad diesel switcher number 1171 parked at Yreka, California, in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive.