A Southern Pacific Railroad Commuter train leaves Redwood City, California on August 10, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train.

A Southern Pacific Railroad Fairbanks-Morse unit with a Commuter train leaves Redwood City, California on August 10, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train.

Amtrak diesel locomotive 293, an F40PHR EMD SN 777063-14 at Oakland, California on March 31, 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 293 leads train number 11 at Oakland, California on March 31, 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 627 at Oakland, California in 1979. Amtrak 627 leads train number 5 during a station stop at Oakland in 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 627, an EMD SDP40F at Oakland, California in October 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 627, an EMD SDP40F at Oakland, California in October 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Atchison, Topeka & Santa Fe Railway diesel locomotive 3283 at Oakdale, California on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Burlington Northern C636 Number 4365, Western Pacific U30B Number 3068 and and an unidentified Western Pacific diesel locomotive at Stockton, California on July 9, 1972. Number 4365 was built by American Locomotive Company (ALCO) in December 1967 as Spokane, Portland and Seattle (SP&S) Number 335. Builder Number 3488-06. It was retired in May 1980. Number 3068 was built by General Electric Company (GE) in May 1969 as WP Number 768, Builder Number 37006. Photo by E. Forrest.