Amtrak diesel locomotive 150, an F7B SN 17863 at Havre, Montana on August 23, 1972. Amtrak 122 is former Burlington Northern 9745 and former Great Northern 462C. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 409, an EMD F40PHR SN 877008-9 at Havre, Montana on May 1, 1989. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 9788 at Livingston, Montana in September 1972. Amtrak 9788 leads train number 10 at Livingston in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 9788 at Livingston, Montana on September 2, 1972. Amtrak 9788 makes a station stop with train number 10 at Livingston in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 9794 enters Livingston, Montana on September 2, 1972. Amtrak 9794 leads train number 10 at Livingston in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 9952 leads train number 8. Possible locations are Williston, North Dakota, Glasgow, Montana or elsewhere in Montana on August 23, 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Burlington Northern 3401 (Class SW1500) at Ravalli, Montana on September 8, 1984. Photo by George Bergson.

Burlington Northern 4055 (Class B30-7AB) at Missoula, Montana on October 10, 1983. Photo by George Bergson.

Burlington Northern diesel locomotive 1518, formerly Great Northern 618, at Libby, Montana, on August 05, 1971. Number 1518 is a GP7 built by General Motors Electro Motive Division (EMD), builder's number 11044. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1520, formerly Great Northern 620, at Libby, Montana, on August 05, 1971. Number 1520 is a GP7 built by General Motors Electro Motive Division (EMD), builder's number 11046. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.