Missouri Pacific Railroad diesel locomotive 6027 at Green River, Wyoming on July 30, 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Burlington Northern diesel locomotive 6194, formerly Chicago, Burlington and Quincy 447, at Sheridan, Wyoming, on September 01, 1972. Number 6194 is an SD9 built by General Motors Electro Motive Division (EMD), builder's number 23626. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6177, formerly Chicago, Burlington and Quincy 430, at Sheridan, Wyoming in August 1972. Number 6177 is an SD9 built by General Motors Electro Motive Division (EMD), builder's number 23609. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 6177, formerly Chicago, Burlington and Quincy 430, at Sheridan, Wyoming, on September 01, 1972. Number 6177 is an SD9 built by General Motors Electro Motive Division (EMD), builder's number 23609. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 5650, formerly Chicago, Burlington and Quincy 562, at Sheridan, Wyoming, on September 01, 1972. Number 5650 is a U28C built by General Electric, builder's number 35751. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 2047, formerly Chicago, Burlington and Quincy 911, at Sheridan, Wyoming, on September 01, 1972. Number 2047 is a GP20 built by General Motors Electro Motive Division (EMD), builder's number 26582. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1998, formerly Northern Pacific 384, at Sheridan, Wyoming, on September 01, 1972. Number 1998 is a GP18 built by General Motors Electro Motive Division (EMD). Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.