Burlington Northern Type C30-7 Number 5550, built October 1978; SD40-2 Number 7807, built June 1977; C30-7 (number unknown), and an SD40-2 (number unknown) with empty coal at Sterling, Colorado on August 24, 1981. Maintenance base "Alliance" for Number 5550. Photo by Al Christianson.

Burlington Northern Type C30-7 Number 5520, built June 1977; C30-7 Number 5562, built October 1978; in Sterling, Colorado on August 24, 1981. Maintenance base "Alliance" for Number 5520. Photo by Al Christianson.

Burlington Northern diesel locomotive 5520 at Sterling, Colorado on August 24, 1981. Number 5520 is a C30-7 built by General Electric (GE). From the Al Christianson Collection, the photographer is Al Christianson.

Burlington Northern U23C Number 5200 in the servicing facility at Sterling, Colorado on August 24, 1981. Number 5200 was built by General Electric Company (GE) in April 1969 as Chicago, Burlington and Quincy (CB&Q) Number 460. Builder Number 36988. It was retired in June 1984. Photo by Al Christianson.

Burlington Northern U23C Number 5200 in the servicing facility at Sterling, Colorado on August 24, 1981. Number 5200 was built by General Electric Company (GE) in April 1969 as Chicago, Burlington and Quincy (CB&Q) Number 460. Builder Number 36988. It was retired in June 1984. Photo by Al Christianson.

Burlington Northern SW12 Number 247, former Chicogo, Burlington and Quincy 9289, in Sterling, Colorado on August 24, 1981 with Burlington Northern Caboose Photo by Al Christianson.