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 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.

Amtrak diesel locomotive 305 leads train number 25 at Nampa, Idaho on August 1, 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train