Burlington Northern Diesel Locomotive, Type SW7 Number 138 and, Type SW7 Number 141 at Saint Paul, Minnesota on April 8, 1979. Number 138 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 166, Builder Number 9572. It was retired in May, 1982. Number 141 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 169, Builder Number 9575. It was retired in October, 1985. Photo by Al Christianson.

Burlington Northern SD40-2 Number 6742, built March 1976; at Saint Paul, Minnesota on November 17, 1980. Photo by Al Christianson.

Burlington Northern SD40-2 Number 6729, built March 1976; two SD40-2 numbers unknown; moving under the 7th Street overpass in Saint Paul, Minnesota with westbound empty coal hoppers on October 5, 1980. Photo by Al Christianson.

Burlington Northern SD40-2 Number 6729, built March 1976; two SD40-2 numbers unknown; at Saint Paul, Minnesota with westbound empty coal hoppers on October 5, 1980. Photo by Al Christianson.

Burlington Northern Class SD24 Number 6252, (former Burlington Number 512); a leased Precision SD18m Number 1809; and a leased Precision SD18m Number 184* at Dayton's Bluff, Minnesota with Conrail covered gondola in 1979. Photo by Al Christianson.

Burlington Northern Class SD7 Number 6022 with freight cars at Saint Paul, Minnesota on April 7, 1981. Photo by Al Christianson. Number 6022 was built by Electro-Motive Division in April, 1953 as Great Northern Number 572, Builder Number 17903. It was retired in July, 1983.

Burlington Northern diesel locomotive 5712 at Dayton's Bluff, Saint Paul, Minnesota on March 11, 1980. Number 5712 is a U33C built by General Electric (GE). From the Al Christianson Collection, the photographer is Al Christianson.

Burlington Northern diesel locomotive 5627 at Dayton's Bluff, Saint Paul, Minnesota on April 15, 1980. Number 5627 is a U25C built by General Electric (GE). From the Al Christianson Collection, the photographer is Al Christianson.

Burlington Northern diesel locomotive 5627 at Dayton's Bluff, Saint Paul, Minnesota on April 15, 1980. Number 5627 is a U25C built by General Electric (GE). From the Al Christianson Collection, the photographer is Al Christianson.

Burlington Northern diesel locomotive 5617 at Saint Paul, Minnesota on February 29, 1980. Number 5617 is a U25C built by General Electric (GE). From the Al Christianson Collection, the photographer is Al Christianson.