Southern Pacific Railroad diesel locomotive number 4414, circa 1987. SP 4414 parked in a community. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 4388 at Mt. Shasta, California in August 1977. SP 4388, 9054 and a third unit lead an extra freight train north of Mt. Shasta in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 4370 at Eugene, Oregon on May 30, 1974. SP 4370 and caboose 1214 make a hoop at Eugene in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, steel caboose.

Southern Pacific Railroad diesel locomotive number 4368 in 1987. SP 4368, an SD9, parked on an industrial siding. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 4000 at Redwood City, California on August 10, 1973. SP 4000 with caboose 1440 at Redwood City in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, steel caboose.

Southern Pacific Railroad diesel locomotive number 4000 at Redwood City, California on August 02, 1973. SP 4000 and a caboose parked at Redwood City in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 3752 at Roseville, California on August 03, 1973. SP 3752 and 3330 parked at Roseville in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 3307 at Reno, Nevada on August 24, 1977. SP 3307 and 3324 lead a work train east of Reno in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, work train, river.

Southern Pacific Railroad diesel locomotive number 3206 at Tacoma, Washington in June 1971. SP 3206 making a station stop at Tacoma Union Station with an Amtrak passenger train in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, passenger depot.

Southern Pacific Railroad diesel locomotive number 3200 at Menlo Park, California on August 09, 1973. SP 3200 with SP Commuter train No. 138 at Menlo Park depot in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, passenger depot.