Burlington Northern Class SD40 Number 6342, (former Colorado and Southern Number 882); a U33C, number unknown, (former Chicago, Burlington and Quincy, number unknown); and an SD40-2, number unknown; passing Coon Creek train order office at Minneapolis, Minnesota with a westbound freight on February 7, 1981. Photo by Al Christianson.

Burlington Northern Class SD45 Number 6537, built August 1971; SD45 Number 657*, (former Colorado and Southern), built October 1971; and an unknown engine; with a freight at an unidentified location on September 19, 1980. Photo by Al Christianson.

Burlington Northern Class F45 Number 6613, (former Great Northern Number 440); at Northtown, Minnesota on February 24, 1981. Maintenance base "Havre". Photo by Al Christianson.

Burlington Northern Class F45 Number 6615, built July 1970; an SD40-2, number unknown; an SD45, number unknown; and an SDP45, number unknown; at an unidentified location on March 22, 1981. 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 SD40-2 Number 6742, built March 1976; at Saint Paul, Minnesota on November 17, 1980. Photo by Al Christianson.

Burlington Northern SD40-2 Number 8141, built July 1980; SD40-2 number unknown; SD40-2 number unknown; crossing the high bridge over the Sheyenne river at Valley City, North Dakota with an eastbound freight on March 14, 1981. Photo by Al Christianson.

Burlington Northern SD40-2 Number 8141, built July 1980; SD40-2 number unknown; SD40-2 number unknown; approaching the high bridge at Valley City, North Dakota with an eastbound freight on March 14, 1981. Photo by Al Christianson.

Burlington Northern Electro-Motive Division (EMD) NW5 Number 986 at Minneapolis, Minnesota yard office with light tower on October 21, 1980. Photo by Al Christianson.