Burlington Northern diesel locomotive 6406, formerly Northern Pacific 3606, at Tacoma, Washington, on December 14, 1971. Number 6406 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33027. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6407, formerly Northern Pacific 3607, at Tacoma, Washington, on November 21, 1971. Number 6407 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33028. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6407, formerly Northern Pacific 3607, at Tacoma, Washington, on November 21, 1971. Number 6407 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33028. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6414 at Tacoma, Washington in May 1973. Numbers 6414, 6583, 1760 and one other unit leads train number 150, Portland to Seattle time freight. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive.

Burlington Northern diesel locomotive 6416, formerly Northern Pacific 3616, at Tacoma, Washington, on July 11, 1973. Number 6416 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33037. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6423, formerly Northern Pacific 3623, at Tacoma, Washington, on July 20, 1971. Number 6423 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33903. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6423 at Tacoma, Washington, on July 20, 1971. Number 6423, an ex-Northern Pacific SD45, is leading the Vancouver, BC to Los Angeles time freight number 137 on the sweeping right curve between Head of the Bay Yard and the Tacoma Depot. The train operated via the Oregon Trunk line from Wishram, Washington to Bieber, California where the Western Pacific took over the train for the remainder of its trip. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive.

Burlington Northern diesel locomotive 6439, formerly Great Northern 409, at Tacoma, Washington, on February 10, 1972. Number 6439 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 32989. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6446, formerly Great Northern 416, at Tacoma, Washington, on March 31, 1971. Number 6446 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 32996. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6463, formerly Chicago, Burlington and Quincy 522, at Tacoma, Washington, on July 07, 1973. Number 6463 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 34557. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.