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 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 6424, formerly Northern Pacific 3624, at Auburn, Washington, on June 21, 1971. Number 6424 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33904. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6425, formerly Northern Pacific 3625, at Auburn, Washington, on April 14, 1971. Number 6425 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33905. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6427, formerly Northern Pacific 3627, at Auburn, Washington, on April 17, 1972. Number 6427 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33907. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6427, formerly Northern Pacific 3627, at Auburn, Washington, on June 03, 1976. Number 6427 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33907. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6428, formerly Northern Pacific 3628, at Auburn, Washington, on September 14, 1970. Number 6428 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33908. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6428, formerly Northern Pacific 3628, at Auburn, Washington, on September 14, 1970. Number 6428 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33908. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6428, formerly Northern Pacific 3628, at Auburn, Washington, circa 1973. Number 6428 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33908. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6428, formerly Northern Pacific 3628, at Minneapolis, Minnesota, on August 24, 1972. Number 6428 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33908. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6429, formerly Northern Pacific 3629, at Seattle, Washington, on July 29, 1973. Number 6429 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33909. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, roundhouse.

Burlington Northern diesel locomotive 6429, formerly Northern Pacific 3629, at Seattle, Washington, on July 29, 1973. Number 6429 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 33909. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Northern Pacific Electro-Motive Division Type SD45 numbered as Burlington Northern 6429 at Whitefish, Montana, October 31, 1970.

Burlington Northern diesel locomotive 6430, formerly Great Northern "Hustle Muscle" number 400, at Auburn, Washington, on June 03, 1976. Number 6430 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31598. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6430, formerly Great Northern "Hustle Muscle" number 400, circa 1980. Number 6430 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31598. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6432, formerly Great Northern 402, at Vancouver, Washington, on February 12, 1976. Number 6432 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31600. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6433, formerly Great Northern 403, at Seattle, Washington, on July 20, 1973. Number 6433 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31601. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6433, formerly Great Northern 403, at Vancouver, Washington, on February 12, 1976. Number 6433 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31601. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6434, formerly Great Northern 404, at Minneapolis, Minnesota, on June 21, 1973. Number 6434 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31602. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, roundhouse.

Burlington Northern diesel locomotive 6435, formerly Great Northern 405, at Auburn, Washington in July 1975. Number 6435 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31603. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6436, formerly Great Northern 406, at Seattle, Washington, on September 16, 1973. Number 6436 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31604. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6437, formerly Great Northern 407, at Easton, Washington, on July 21, 1970. Number 6437 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31605. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6437, formerly Great Northern 407, at Easton, Washington, on July 21, 1970. Number 6437 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 31605. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6437 at Easton, Washington, on July 21, 1970. Number 6437, an SD45, is shown with U35C number 5611. Photo by J.M. Fredrickson. Other Subject Classes: 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 644 at Brook Park, Minnesota on August 1, 1971. Number 644 is an F7A built by Electro Motive Division (EMD), builder's number 16077. Photo by Howard Patrick.

Burlington Northern diesel locomotive 6440, formerly Great Northern 410, at Auburn, Washington, on June 02, 1971. Number 6440 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 32990. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6441, formerly Great Northern 411, at Auburn, Washington, on October 31, 1970. Number 6441 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 32991. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6442, formerly Great Northern 412, at Auburn, Washington, on August 10, 1970. Number 6442 is an SD45 built by General Motors Electro Motive Division (EMD), builder's number 32992. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6442 at Auburn, Washington, on August 10, 1970. Number 6442, an SD45, is with F9B number 827, U33C number 5716 and U33C number 5705 at the Auburn locomotive facility. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.