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.

Saint Maries River Railroad Electro-Motive Division (EMD) GP-9 diesel locomotive number 103 (former Milwaukee 322) parked at the engine facility in Saint Maries, Idaho, circa 1998. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive .

Alaska Railroad diesel locomotive 1502 on display at Yakima, Washington, circa 1978. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Alaska Railroad diesel locomotive 3017 at Hinkle, Oregon on October 9, 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Alaska Railroad diesel locomotive 3017 at Hinkle, Oregon on October 9, 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Alstom diesel locomotive 3072 leading a westbound freight train at Rochelle, Illinois in 2000. 3072 is an SD40-2 built by General Motors Electro-Motive Division (EMD), builder's number 31266. Second unit is consist is CSX 5937, a B40-8 built by General Electric (GE), builder's number 45970. Photo taken by Howard Patrick.

Alstom diesel locomotive 3072 leading a westbound train at Rochelle, Illinois in 2000. 3072 is an SD40-2 built by General Motors Electro-Motive Division (EMD), builder's number 31266. Second unit is consist is CSX 5937, a B40-8 built by General Electric (GE), builder's number 45970. In the distance, railfans watching from the Rochelle Railroad Park. Photo taken by Howard Patrick.

Alstom diesel locomotive 3072 leading a westbound train at Rochelle, Illinois in 2000. 3072 is an SD40-2 built by General Motors Electro-Motive Division (EMD), builder's number 31266. Second unit is consist is CSX 5937, a B40-8 built by General Electric (GE), builder's number 45970. In the distance, railfans watching from the Rochelle Railroad Park. Photo taken by Howard Patrick.

Alstom diesel locomotive 3072 leading a westbound train at Rochelle, Illinois in 2000. 3072 is an SD40-2 built by General Motors Electro-Motive Division (EMD), builder's number 31266. Second unit is consist is CSX 5937, a B40-8 built by General Electric (GE), builder's number 45970. In the distance, eastbound Union Pacific train is crossing BNSF at the crossing, with railfans watching from the Rochelle Railroad Park. Photo taken by Howard Patrick.

American Locomotive Company (ALCO) diesel locomotives Number DL-701A, 701-B and 701-C in demonstration service on the SP&S at Wishram, Washington, undated. Photo by J. Mills.

American Smelting and Refining Company (ASARCO) number 52, a General Electric (GE) 44-ton diesel switching locomotive at the Tacoma Smelter at Tacoma, Washington, in October 1969. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive , switching locomotive.

American Smelting and Refining Company (ASARCO) diesel locomotive number 52 switching cars at the Tacoma Smelter at Tacoma, Washington, in October 1969. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

American Smelting and Refining Company (ASARCO) diesel locomotive number 52 switching cars at the Tacoma Smelter at Tacoma, Washington, in October 1969. Photo by Al Harris, J.M. Fredrickson Collection. Other Subject Classes: diesel locomotive, switching locomotive.

Amtrak diesel locomotive 101 at Seattle, Washington in August 1974. Amtrak 101 leads number 791 into King Street Station at Seattle in 1974 Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 101 at Seattle, Washington on June 23, 1973. Amtrak 101, an F7A serial 7149, is located at Interbay engine facility in Seattle in June 1973. Amtrak 101 is former Burlington Northern 8774, and former Northern Pacific 6508C. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 102, former Burlington Northern 9711 and Burlington Northern 9707 at King Street Station in Seattle, Washington on February 27, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 102 circa 1974. Also shown in the photo are former Burlington Northern diesels numbers 9711, 9707 plus one more unit and a Heater Car. All units are former Great Northern diesels. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Amtrak diesel locomotive 106 at Seattle, Washington on July 16, 1973. Amtrak 106, an F7A serial number 8738, is located at Interbay engine facility in Seattle July 1973. Amtrak 106 is former Northern Pacfic 6512A, and former Burlington Northern 9784 and was sold to Amtrak August 1, 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 122 at Tacoma, Washington in December 1974. Amtrak 122, an F7A serial number 18142, is located in Tacoma in December 1974. Amtrak 122 is former Southern Pacific 6459. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 150, an F7B SN 17863 at Havre, Montana on August 23, 1972. Amtrak 122 is former Burlington Northern 9745 and former Great Northern 462C. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 152, an F7B SN 8742, at Balmer Yard in Seattle, Washington, circa 1978. Amtrak 152 is former Burlington Northern 9747. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 154, an F7B SN 10857, is at Balmer Yard in Seattle, Washington, circa 1978. Amtrak 154 is former Burlington Northern 9771 and Northern Pacific 6513B. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 200, an F40PH EMD SN 757099-1 at New London, Connecticut in March 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 200, n F40PH EMD SN 757099-1 at New London, Connecticut in March 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 200 at New London, Connecticut on January 24, 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 200 leads an Amtrak train at Old Saybrook, Connecticut on January 28, 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 202 at Groton, Connecticut on January 28, 1977. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 208 at Stampede, Washington on August 14, 1972. in the Cascade Mountains. Amtrak 208 leads train number 10 toward Stampede Tunnel in 1972. The engineer is J. Tasche. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train