Burlington Northern Type U33C Number 5750, built August 1971; SD40-2 Number 6822, former Number 6362, built November 1973; and an unidentified St. Louis-San Francisco Railway (Frisco) diesel engine at Mississippi Street in St Paul, Minnesota on August 5, 1979. Photo by Tom Carlson.

Burlington Northern Type U25C Number 5627, former Northern Pacific Number 2527; U25C Number 5637, former Burlington Number 557; U28C Number 5673, former Northern Pacific Number 2807; passing Hoffman Avenue interlocking in Daytons Bluff, Minnesota with two Great Northern ballast hoppers, including Number 78264, on April 15, 1980. Photo by Al Christianson.

Burlington Northern Type U25C Number 5627, former Northern Pacific Number 2527; U25C Number 5637, former Burlington Number 557; U28C Number 5673, former Northern Pacific Number 2807; passing Hoffman Avenue interlocking in Daytons Bluff, Minnesota with eastbound freight on April 15, 1980. Photo by Al Christianson.

Burlington Northern Type U25C Number 5617, former Northern Pacific Number 2517; SD9 Number 6156, former Burlington Number 354; in Saint Paul, Minnesota on February 29, 1980. Photo by Al Christianson.

Burlington Northern Type C30-7 Number 5534, built December 1977; U30C Number 5839, built June 1975; a GP9 (number unknown); and a St. Louis-San Francisco Railway (Frisco) GP35 at Omaha, Nebraska on August 4, 1979. 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 NW5 Number 995 and NW5 Number 993 are about to cross the Soo Line at Wyndmere, North Dakota on February 18, 1981. Photo by Al Christianson.

Burlington Northern NW5 Number 995 and NW5 Number 993 are crossing the Soo Line at Wyndmere, North Dakota on February 18, 1981. Photo by Al Christianson.

Burlington Northern SD40-2 Number 8177, built AuguSaint 1980; SD40-2 Number 7937, built April 1980; SD40-2 Number 6902, built March 1973; passing Newport, Minnesota interlocking with an eastbound ore move on March 21, 1981. Train order signal clear. Photo by Al Christianson.

Burlington Northern SD40-2 Number 8177, built AuguSaint 1980; SD40-2 Number 7937, built April 1980; SD40-2 Number 6902, built March 1973; at Dayton's Bluff, Minnesota with an eastbound ore move on March 21, 1981. Several Great Northern ore jennies near head end. Photo by Al Christianson.