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

Diesel locomotive BN 1990, Class GP18 at Missoula, Montana, 1971. Other Subject Classes: Locomotive-Diesel

Diesel locomotive BN 1990, Class GP18 at Missoula, Montana, July 1971. Other Subject Classes: Locomotive-Diesel

Diesel locomotive BN 225, Class SW1200 at Glendive, Montana, November 15, 1994. Other Subject Classes: Locomotive-Diesel

Great Northern Electro-Motive Division Type SW1200 numbered as Burlington Northern 145 at Great Falls, Montana, April 11, 1971.

Great Northern Electro-Motive Division Type GP7 numbered as Burlington Northern 1505 at Whitefish, Montana, October 31, 1970.

Great Northern Electro-Motive Division Type GP7 numbered as Burlington Northern 1505 at Whitefish, Montana, October 31, 1970.

Great Northern Electro-Motive Division Type GP7 numbered as Burlington Northern 1516 at Whitefish, Montana, September 5, 1970.

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.

Great Northern Electro-Motive Division Type GP7s numbered as Burlington Northern 1530 and 1505 at Great Falls, Montana, May 23, 1971.

Burlington Northern diesel locomotive 1710, formerly Northern Pacific 210, at Livingston, Montana, on September 02, 1972. Number 1710 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 20342. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1714, formerly Northern Pacific 241, at Livingston, Montana, on September 02, 1972. Number 1714 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 20644. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 1716, formerly Northern Pacific 243, at Livingston, Montana, on September 02, 1972. Number 1716 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 21020. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 1725, formerly Northern Pacific 287, at Missoula, Montana, on September 02, 1972. Number 1725 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 22770. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 1735, formerly Northern Pacific 297, at Livingston, Montana, on September 02, 1972. Number 1735 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 22780. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 1812, formerly Great Northern 660, at Havre, Montana, on August 23, 1972. Number 1812 is a GP9 built by General Motors Electro Motive Division (EMD). Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight yard.

Burlington Northern diesel locomotive 1815, formerly Great Northern 663, at Havre, Montana, on August 23, 1972. Number 1815 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 19348. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1820, formerly Great Northern 668, at Glasgow, Montana, on August 23, 1972. Number 1820 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 19353. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1821, formerly Great Northern 669, at Havre, Montana, on August 23, 1972. Number 1821 is a GP9 built by General Motors Electro Motive Division (EMD), builder's number 19354. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 1991, formerly Northern Pacific 377, at Livingston, Montana, on September 01, 1972. Number 1991 is a GP9 built by General Motors Electro Motive Division (EMD). Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Great Northern Electro-Motive Division Type GP20 numbered as Burlington Northern 2030 at Great Falls, Montana, May 23, 1971.

Burlington Northern diesel locomotive 225, formerly Northern Pacific 166, at Livingston, Montana, on September 02, 1972. Number 225 is an SW1200 built by General Motors Electro Motive Division (EMD), builder's number 24030. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 2514, formerly Great Northern 3031, at Libby, Montana, on August 05, 1971. Number 2514 is a GP35 built by General Motors Electro Motive Division (EMD), builder's number 30119. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.