Burlington Northern 592, formerly Northern Pacific 106, waits on a service track at St. Paul, Minnesota, on June 5, 1971. The locomotive was built by General Motors Electromotive Division as a type NW2 diesel switcher in 1941. Other subject classes: diesel locomotive, switcher locomotive, NW2

Burlington Northern computer center at Saint Paul, Minnesota, on June 20, 1973. Photo by J.M. Fredrickson. Other Subject Classes: computer center.

Burlington Northern diesel locomotive 144, formerly Great Northern 12, at St Paul, Minnesota, on June 21, 1973. Number 144 is an SW7 built by General Motors Electro Motive Division (EMD), builder's number 10870. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 144, formerly Great Northern 1, at St Paul, Minnesota, on June 21, 1973. Number 144 is an SW7 built by General Motors Electro Motive Division (EMD), builder's number 10870. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 166, formerly Great Northern 33, at St Paul, Minnesota, on June 21, 1973. Number 166 is an SW1200 built by General Motors Electro Motive Division (EMD), builder's number 22485. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 317 at St Paul, Minnesota, on June 21, 1973. Number 317 is an SW1500 built by General Motors Electro Motive Division (EMD), builder's number 71605. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 393 at St Paul, Minnesota, on June 21, 1973. Number 393 is an SW1000 built by General Motors Electro Motive Division (EMD). Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, roundhouse.

Burlington Northern diesel locomotive 5612, formerly Northern Pacific 2512, at St Paul, Minnesota, on June 19, 1973. Number 5612 is a U25C built by General Electric, builder's number 35047. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 5626, formerly Northern Pacific 2526, at St Paul, Minnesota, on June 26, 1973. Number 5626 is a U25C built by General Electric, builder's number 35593. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.