Southern Pacific Railroad diesel locomotive number 8980 at Eugene, Oregon on May 29, 1974. SP 8980 and 8961 parked by the yard tower in Eugene in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 8961 at Eugene, Oregon on May 29, 1974. SP 8961 and 8980 parked by the yard tower in Eugene in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, tower.

Southern Pacific Railroad diesel locomotive number 8618 at Redwood City, California on August 02, 1973. SP 8618 trails 9202 on a freight train at Redwood City in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 8458 at Truckee, California on August 27, 1975. SP 8458, 8405 and 8470 help a westbound extra freight train west of Truckee in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, helper locomotive-.

Southern Pacific Railroad diesel locomotive number 7966 at East Portland, Oregon on April 29, 1990. SP 7966 and 7943 with slug 1601 lead a freight consist in Portland in 1990. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, slug locomotive.

Southern Pacific Railroad diesel locomotive number 7943 at Portland, Oregon in 1990. SP 7966 and 7943 with slug 1601 lead a freight consist in Portland in 1990. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, slug locomotive.

Southern Pacific Railroad diesel locomotive number 7810 at Auburn, Washington on May 19, 1970. SP 7810 on a lease program with the BN, parked with other units near the NP diesel house in Auburn in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Southern Pacific Railroad diesel locomotive number 7810 at Auburn, Washington on May 19, 1970. SP 7810 on a lease program with the BN, parked with NP 3624 near the diesel house in Auburn in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Southern Pacific Railroad diesel locomotive number 7809 at Auburn, Washington on May 25, 1970. SP 7809 on a lease program with the BN, parked with other units near the NP diesel house in Auburn in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Southern Pacific Railroad diesel locomotive number 7809 at Auburn, Washington on May 25, 1970. SP 7809 on a lease program with the BN, parked with NP 3303 next to the diesel house in Auburn in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.