Diesel locomotive UP 2061, Class GP38-2 on the Camas Prairie Railroad at Lewiston, Idaho, November 28, 1995. Other Subject Classes: Locomotive-Diesel

United States Army General Electric (GE) 80-ton diesel locomotive number 7201 (construction number 15626, built in 1942) parked at Shelton, Washington, circa 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

United States Army General Electric (GE) 45-ton diesel locomotive number 7356 on a flat car at Union Pacific's Van Asselt Yard near Georgetown at Seattle, Washington, in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive , switcher locomotive.

United States Army General Electric (GE) 45-ton diesel locomotive number 7356 on a flat car at Union Pacific's Van Asselt Yard near Georgetown in Seattle, Washington, in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

United States Army General Electric (GE) 45-ton diesel locomotive number 7356 on a flat car at Union Pacific's Van Asselt Yard near Georgetown at Seattle, Washington, in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

United States Army General Electric (GE) 80-ton diesel locomotive number 7373 hauls a cut of cars at MoBase, Washington, at Fort Lewis in 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

United States Army Alco RSD-1 diesel locomotive number 8015 (construction number 70636, built in 1942) parked at the Northern Pacific's engine facility at Auburn, Washington, in 1948. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

United States Navy General Electric (GE) 45-ton diesel locomotive number 21 (also known as 65-00421, construction number 13135, built in July 1941) parked at a scrap yard in Tacoma, Washington, circa 1985. Photo by Al Harris, J.M. Fredrickson Collection. Other Subject Classes: diesel locomotive, switching locomotive.

US Navy Electro Motive Division type RS-1 62-00571 at Portland on its way from Hawthorne, Nevada to the Alaska Railroad in 1977. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

US Navy Electro Motive Division type RS-1 62-00571 at Portland on its way from Hawthorne, Nevada to the Alaska Railroad in 1977. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.