Burlington Northern diesel locomotive 6118 at Northtown Yard Minneapolis, Minnesota on February 24, 1981. Number 6118 is an SD9 built by Electro-Motive Division (GM), builder's number 24093. Photo by Al Christianson.

Burlington Northern GP7 Number 1550 leads a string of freight cars at Minneapolis Junction, Minnesota on May 15, 1981. Photo by Al Christianson.

Burlington Northern Diesel Locomotive, Type SW1200 Number 170 at Minneapolis, Minnesota on April 23, 1979. Number 170 was built by Electro-Motive Division (EMD) in January, 1958 as Northern Pacific Number 170, Builder Number 24034. It was retired in March, 1992. Engineer's side view. Photo by Al Christianson.

Burlington Northern Class SD7 Number 6022 with an unidentified business car at Minneapolis, Minnesota on August 14, 1980. 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. Other subject categories: Business Cars

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

Burlington Northern Electro-Motive Division (EMD) NW5 Number 986 at Minneapolis, Minnesota on March 16, 1981. Photo by Al Christianson.

Burlington Northern Electro-Motive Division (EMD) NW5 Number 990 at Minneapolis, Minnesota on January 7, 1982. Photo by Al Christianson.

Burlington Northern Electro-Motive Division (EMD) NW5 Number 990 at Minneapolis, Minnesota on January 7, 1982. Photo by Al Christianson.

Burlington Northern GP7 Number 1550, former Great Northern Number 650; SD7 Number 6049, former Burlington Number 401; GP9 Number 1867, former Northern Pacific Number 244; in Minneapolis, Minnesota pulling freight on February 22, 1982. Photo by Al Christianson.