Burlington Northern diesel locomotive 6046, formerly Chicago, Burlington and Quincy 323, at Clyde, Illinois, on August 26, 1972. Number 6046 is an SD7 built by General Motors Electro Motive Division (EMD), builder's number 18343. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6050, formerly Chicago, Burlington and Quincy 402, at Galesburg, Illinois, on August 29, 1972. Number 6050 is an SD7 built by General Motors Electro Motive Division (EMD), builder's number 17398. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6052A at Puyallup, Washington, on June 11, 1970. Train number 146 (former Northern Pacific 1-679), the Portland to Seattle time freight led by ex-Northern Pacific F3A 6052A. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive.

Burlington Northern diesel locomotive 6053, formerly Chicago, Burlington and Quincy 405, at Galesburg, Illinois, on August 29, 1972. Number 6053 is an SD7 built by General Motors Electro Motive Division (EMD), builder's number 17401. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6053, formerly Chicago, Burlington and Quincy 405, at Galesburg, Illinois, on August 29, 1972. Number 6053 is an SD7 built by General Motors Electro Motive Division (EMD), builder's number 17401. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6059, formerly Chicago, Burlington and Quincy 411, at Lincoln, Nebraska, on August 31, 1972. Number 6059 is an SD7 built by General Motors Electro Motive Division (EMD), builder's number 17407. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 606, formerly Great Northern 273B, at Tacoma, Washington, on July 24, 1970. Number 606 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 11064. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 608, formerly Great Northern 274A, at Sandpoint, Idaho, on August 04, 1971. Number 608 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 11065. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 610, formerly Great Northern 274A, at Seattle, Washington, on March 17, 1971. Number 610 is an F7 built by General Motors Electro Motive Division (EMD). Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 610, formerly Great Northern 274B, at Tacoma, Washington, on January 21, 1972. Number 610 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 11066. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.