Union Pacific Railroad diesel locomotive number 2800 at Tacoma, Washington, in 1980. UP 2800 parked at Tacoma in 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad diesel locomotive number 2056 at Nampa, idaho, in 1986. UP 2056 and 2050 stopped at Nampa in 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 2050 at Nampa, idaho, in 1986. UP 2050 stopped at Nampa in 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 2040 at Yakima, Washington, undated. UP 2040 with 2004 on a freight train at Yakima. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad diesel locomotive number 2038 at Yakima, Washington, undated. UP 2038 with 2014 on a freight train at Yakima. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad diesel locomotive number 2000 at East Olympia, Washington, in 1980. UP 2000 leads 3615 and a freight train at East Olympia in 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 1406 at Titlow, Washington, in 1976. UP 1406 leads an extra freight east bound at Titlow in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 1404 at Kalama, Washington, in 1976. UP 1404 leads freight train no. 691 through Kalama Washington in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 1402 at Ruston, Washington, in 1973. UP 1402 leads 3615 and 3622 on freight train No. 691 through Ruston Washington in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Union Pacific Railroad diesel locomotive number 1246 at Nampa, idaho, in 1971. UP switcher 1246 parked at Nampa in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive.