Burlington Northern diesel locomotive 6618 at Auburn, Washington, on September 14, 1970. Number 6618, an F45, is shown with U33C number 5710, SD45 number 6428 and ex-Northern Pacific GP9 number 250 at the Auburn locomotive facility. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6621 at Auburn, Washington, on May 29, 1971. Number 6621 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 36348. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6623 at Auburn, Washington, on October 13, 1970. Number 6623 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 36350. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6623 at Auburn, Washington, on October 13, 1970. Number 6623, an F45, is shown with SD45 number 6441, F45 number 6614 and ex-Northern Pacific diesel number 248 alongside the Auburn car shop. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, car shop.

Burlington Northern diesel locomotive 6628 at Auburn, Washington, on May 19, 1971. Number 6628 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 37168. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6630 at Auburn, Washington, on May 25, 1971. Number 6630 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 37170. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 6635 at Auburn, Washington, on July 12, 1971. Number 6635 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 37175. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6639 at Auburn, Washington, on July 19, 1972. Number 6639 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 37179. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6639 at Auburn, Washington, on July 19, 1972. Number 6639 is an F45 built by General Motors Electro Motive Division (EMD), builder's number 37179. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6639 at Auburn, Washington, circa 1974. Number 6639, an F45, is shown with SD45 number 6448 and two others in front of the Auburn diesel locomotive shop. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.