Southern Pacific Railroad steam locomotive number 4451 at Santa Barbara, California in June 1947. SP 4451, a 4-8-4, hauls southbound passenger train No. 97 near Santa Barbara in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Southern Pacific Railroad steam locomotive number 4451 at Santa Barbara, California in June 1947. SP 4451, a 4-8-4, hauls southbound passenger train No. 97 meeting the northbound Daylight near Santa Barbara in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger train.

Southern Pacific Railroad steam locomotive number 4449 at San Francisco, California in April 1953. SP 4449, a 4-8-4, parked at the station in San Francisco while in service on the Daylight trains to Los Angeles in 1953. Photo by W.E. Miller, J.M. Fredricson collection. Other Subject Classes: steam locomotive, locomotive facility.

Southern Pacific Railroad steam locomotive number 4360 at San Francisco, California in November 1953. The crew of SP 4360, a 4-8-2, waits for a highball at the station in San Francisco in 1953. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train, railroad crew.

Southern Pacific Railroad steam locomotive number 4205, circa 1930. SP 4205, a 4-6-6-2 cab-forward with freight train No. 663, taking water. Photo by Phil Seeley, J.M. Fredricson collection. Other Subject Classes: steam locomotive, freight train, water column.

Southern Pacific Railroad steam locomotive number 4007, circa 1930. SP 4007, a 2-8-8-2 cab-forward, moves through a freight yard with railroad crews standing nearby circa 1930. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight yard, railroad crew.

Southern Pacific Railroad steam locomotive number 3909 at Canby, Oregon in June 1947. SP 3909, a 4-6-6-2 cab-forward leading the first section of freight train No. 667, moves past the water column at Canby in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, water column.

Southern Pacific Railroad steam locomotive number 3677 at Sparks, Nevada on July 18, 1941. SP 3677, a 2-10-2, parked at the Sparks roundhouse in 1941. Photo by Jerry R. Hanson, J.M. Fredricson collection. Other Subject Classes: steam locomotive, roundhouse, turntable.

Southern Pacific Railroad steam locomotive number 3611 at Davis, California on June 18, 1947. SP 3611, a 2-10-2, leads an extra freight train at Davis in 1947. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train.

Southern Pacific Railroad steam locomotive number 3025 at Los Angeles, California on August 06, 1973. SP 3025, a 4-4-2 Atlantic-type locomotive on display in Los Angeles in 1973. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display.

Southern Pacific Railroad steam locomotive number 2271 with passenger train No. 501 running down a city street circa 1920. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger train.

Southern Pacific Railroad steam locomotive number 1901 at Portland, Oregon, circa 1910. SP 1901, a 2-6-2T in switching service at Portland circa 1910. Photo by K. Leavens, J.M. Fredricson collection. Other Subject Classes: steam locomotive, switcher locomotive.

Southern Pacific Railroad passenger train at Woodburn, Oregon, circa 1915. The SP passenger depot at Woodburn circa 1915. J.M. Fredrickson collection. Other Subject Classes: passenger train, passenger station, passenger.

Southern Pacific Railroad diesel locomotive number 9847 at Modke Point, California in July 1976. SP 9847, 8873, 8959 and one other unit lead a freight train at Modke Point in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9800 at Roseville, California on August 03, 1973. SP 9800, 9802 and 2146 parked at the locomotive terminal in Roseville in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Southern Pacific Railroad diesel locomotive number 9505 at Eugene, Oregon on May 28, 1974. SP 9505 parked at Eugene in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Southern Pacific Railroad diesel locomotive number 9403 at Roseville, California on April 14, 1976. SP 9403 and 8843 lead an eastbound extra freight train at Roseville in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9349 at Mt. Shasta, California on August 17, 1977. SP 9349 help and westbound extra freight north of Mt. Shasta in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, helper locomotive-.

Southern Pacific Railroad diesel locomotive number 9343 at Lovelock, Nevada on August 24, 1977. SP 9343 and two other units lead a piggy-back freight train near Lovelock in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9238 at Roseville, California on April 14, 1976. SP 9238, 9358 and 9004 with an eastbound extra freight train at Roseville in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9238 at Roseville, California on April 14, 1976. SP 9238, 9358 and 9004 with an eastbound extra freight train at Roseville in 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9197 at Sacramento, California on August 18, 1977. SP 9197 and 9381 lead a mixed freight train west of Sacramento in 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9186 at Redwood City, California on August 02, 1973. SP 9186 and another unit parked at Redwood City in 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Southern Pacific Railroad diesel locomotive number 9119, circa 1975. SP 9119 leads a local freight. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9061 at Truckee, California on August 27, 1975. SP 9061, 8968, 8368 and 8403 lead a westbound extra freight train west of Truckee in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9061 at Donner Summit, California on August 27, 1975. SP 9061, 8968, 8368 and 8403 lead a westbound extra freight train at Donner Summit in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, tunnel.

Southern Pacific Railroad diesel locomotive number 9061 at Donner Summit, California on August 27, 1975. SP 9061, 8968, 8368 and 8403 lead a westbound extra freight train at Donner Summit in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, tunnel.

Southern Pacific Railroad diesel locomotive number 9009 at Kelso, Washington, circa 1975. SP 9009, 9015 and 9249 leads a freight train through Kelso. Photo by Jack Flagg, J.M. Fredricson collection. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 9009 at Kelso, Washington, circa 1975. SP 9009, 9015 and 9249 leads a freight train through Kelso. Photo by Jack Flagg, J.M. Fredricson collection. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive number 8983 at Benecia, California on June 27, 1974. SP 8983 and 9214 lead a freight consist of refrigerator cars at Benicia in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, refrigerator car.