Butte, Anaconda and Pacific Railroad electric locomotives 63, 53, and 56 as well as type GP9 107 at Butte in 1964. Photograph by Alden Raney. Other subject classes: Locomotive-Electric, Locomotive-Diesel.

Butte, Anaconda and Pacific Railroad electric locomotives 63 and type GP9 106 at Butte, Montana in 1964. Photograph by Alden Raney. Other subject classes: Locomotive-Electric, Locomotive-Diesel.

Butte, Anaconda and Pacific Railway type GP7 102 with ballast train at Butte, Montana in 1964. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Great Northern Railway 2004 at Butte, Montana. The locomotive is a General Motors Electro Motive Division Model GP20. Big Sky Blue paint scheme. Other subject classes: Locomotive, GP20

Great Northern Railway 570 at Butte, Montana. The locomotive is a General Motors Electro Motive Division Model SD7. Other subject classes: Locomotive, SD-7, Shop Building

Great Northern Railway 582 at Butte, Montana. The locomotive is a General Motors Electro Motive Division Model SD9. Big Sky Blue paint scheme. Other subject classes: Locomotive, SD-9

Great Northern Railway 663 at Butte, Montana. The locomotive is a General Motors Electro Motive Division Model GP-9. Big Sky Blue paint scheme. Other subject classes: Locomotive, GP-9

Great Northern Railway 683 at Butte, Montana. The locomotive is a General Motors Electro Motive Division Model GP9. Other subject classes: Locomotive, GP-9

Great Northern dynamic brake equipped type SD9 598 along with type SD's 582, 594, and one other unit at Butte, Montana in 1963. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Northern Pacific diesel locomotive number 6501 in the yard at Butte, Montana, on August 20, 1949. NP 6501 is an F-7 built by Electro Motive Division of General Motors Company in 1949. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive,