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 6511 is leading a train at Northtown yard in Minneapolis, Minnesota on June 15, 1980. Number 6511 is an SD45 built by Electro-Motive Division (EMD), builder's number 37119. Photo by Al Christianson.

Burlington Northern 6613 at the Northtown yard in Minneapolis, Minnesota on February 24, 1981. Number 6613 is an F45 built by Electro-Motive Division (EMD), builder's number 35117. Photo by Al Christianson.

Burlington Northern 6782 at Northtown Yard in Minneapolis, Minnesota on February 24, 1981. Number 6782 is an SD40-2 built by Electro-Motive Division (EMD), builder's number 766071-2. Photo by Al Christianson.

Burlington Northern 7856 in Northtown Yard at Minneapolis, Minnesota on February 24, 1981. Number 7856 is an SD40-2 built by Electro-Motive Division (EMD), builder's number 786001-1. 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 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.