Burlington Northern diesel locomotive 5498 (a Class B32-8) at Parkwater, Washington on October 6, 1987. Photograph by Katon Serafine.

Burlington Northern diesel locomotive 5498 (a Class B32-8), Burlington Northern 4074 (a Class B30-7AB) at Parkwater, Washington on October 6, 1987. Photograph by Katon Serafine.

Burlington Northern diesel locomotive 5499 (a Class B32-8) at Yardley, Washington on September 24, 1986. Photograph by Katon Serafine.

Burlington Northern diesel locomotive 5604, formerly Northern Pacific 2504, at Auburn, Washington, on August 04, 1970. Number 5604 is a U25C built by General Electric, builder's number 35039. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5609 at Auburn, Washington, on July 24, 1970. Number 5609, a U25C, is shown with GP35 number 2542 alongside the Auburn diesel locomotive shop. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5609, formerly Northern Pacific 2509, at Auburn, Washington, circa 1973. Number 5609 is a U25C built by General Electric, builder's number 35044. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5610, formerly Northern Pacific 2510, at Auburn, Washington, on January 04, 1971. Number 5610 is a U25C built by General Electric, builder's number 35045. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5611, formerly Northern Pacific 2511, at Easton, Washington, on July 21, 1970. Number 5611 is a U25C built by General Electric, builder's number 35046. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5624, formerly Northern Pacific 2524, at Auburn, Washington, on September 02, 1970. Number 5624 is a U25C built by General Electric, builder's number 35591. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5624, formerly Northern Pacific 2524, at Auburn, Washington, on September 02, 1970. Number 5624 is a U25C built by General Electric, builder's number 35591. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5624, formerly Northern Pacific 2524, at Auburn, Washington, on September 02, 1970. Number 5624 is a U25C built by General Electric, builder's number 35591. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5634, formerly Chicago, Burlington and Quincy 554, at Auburn, Washington, on August 10, 1970. Number 5634 is a U25C built by General Electric, builder's number 35601. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5634, formerly Chicago, Burlington and Quincy 554, at Auburn, Washington, on August 10, 1970. Number 5634 is a U25C built by General Electric, builder's number 35601. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5655, formerly Chicago, Burlington and Quincy 567, at Auburn, Washington, on April 30, 1971. Number 5655 is a U28C built by General Electric, builder's number 35756. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5659 at Easton, Washington, circa 1978. Number 5659, an ex-Chicago, Burlington, and Quincy U35C, is leading a freight train by the depot. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, station.

Burlington Northern diesel locomotive 5659 at Easton, Washington, circa 1978. Number 5659, an ex-Chicago, Burlington, and Quincy U35C, is shown in front of the depot. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, station.

Burlington Northern diesel locomotive 5662, formerly Chicago, Burlington and Quincy 574, at Auburn, Washington, on January 04, 1971. Number 5662 is a U28C built by General Electric, builder's number 35817. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5663, formerly Chicago, Burlington and Quincy 575, at Auburn, Washington, on January 04, 1971. Number 5663 is a U28C built by General Electric, builder's number 35818. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5663 at Auburn, Washington, on January 04, 1971. Numbers 5663, a U28C, is shown with U33C number 5701 alongside the Auburn diesel locomotive shop. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5676, formerly Northern Pacific 2810, at Auburn, Washington, on June 08, 1970. Number 5676 is a U28C built by General Electric, builder's number 35890. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5701, formerly Great Northern 2531, at Auburn, Washington, on January 04, 1971. Number 5701 is a U33C built by General Electric, builder's number 36777. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5702, formerly Great Northern 2532, at Auburn, Washington, on June 11, 1970. Number 5702 is a U33C built by General Electric, builder's number 36778. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5704, formerly Great Northern 2534, at Auburn, Washington, on January 04, 1971. Number 5704 is a U33C built by General Electric, builder's number 36780. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5704, formerly Great Northern 2534, at Auburn, Washington, on January 04, 1971. Number 5704 is a U33C built by General Electric, builder's number 36780. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5704, formerly Great Northern 2534, at Auburn, Washington in July 1975. Number 5704 is a U33C built by General Electric, builder's number 36780. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5705, formerly Great Northern 2535, at Auburn, Washington, on August 10, 1970. Number 5705 is a U33C built by General Electric, builder's number 36781. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5705 at Auburn, Washington, on August 10, 1970. Number 5705 and 5716 are both U33C units. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5706, formerly Great Northern 2536, at Auburn, Washington, on June 08, 1970. Number 5706 is a U33C built by General Electric, builder's number 36782. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5707, formerly Great Northern 2537, at Auburn, Washington, on June 21, 1971. Number 5707 is a U33C built by General Electric, builder's number 36783. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5707, formerly Great Northern 2537, at Auburn, Washington, on April 11, 1972. Number 5707 is a U33C built by General Electric, builder's number 36783. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.