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 SDP45 Number 6598 at Fort Worth, Texas on March 29, 1981. Number 6598 was built by EMD in August 1967 as GN Number 332, Builder Number 33047. Retirement date is uncertain.

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 F3A Number 710, former Spokane, Portland and Seattle Number 801; in Breckenridge, Minnesota on November 27, 1980. Photo by Al Christianson.

Burlington Northern F3A Number 710, former Spokane, Portland and Seattle Number 801; in Saint Cloud, Minnesota on September 18, 1980. Photo by Al Christianson.

Burlington Northern F9A Number 774, former Northern Pacific Number 6702A; in Minneapolis, Minnesota on August 14, 1980. Photo by Al Christianson.