Southern Pacific Railroad diesel locomotive number 4420 at Hillsboro, Oregon in 1987. SP 4420, an SD9 in the Kodachrome paint colors, with a cut of cars at Hillsboro in 1987. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, center-beam flat car.

Southern Pacific Railroad diesel locomotive number 4420 at Hillsboro, Oregon in 1987. SP 4420, an SD9 in the Kodachrome paint colors, parked in Hillsboro in 1987. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.