Burlington Northern Diesel Locomotives 834 and 788 at Minneapolis, Minnesota on March 8, 1981. Number 834 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7009D. Number 788 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7051A. Photo by Dan Poitras

Great Northern Electro-Motive Division Type FP7A numbered as Burlington Northern 9726, Great Northern Type FP7Bs as Burlington Northern 9717 and 9707 on Train 31 near Eureka, Montana, May 17, 1970.

Great Northern Electro-Motive Division Type FP7A numbered as Burlington Northern 9700, Great Northern Type FP7Bs as Burlington Northern 9713, and Burlington Northern 9709 on Train 31 at Whitefish, Montana, May 16, 1970.

Burlington Northern diesel locomotives 9778 at Tacoma, Washington, in March 1971. Burlington Northern 9778 and 9815 lead train number 199 at McCarver Street in Tacoma, Washington in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotives, passenger train

Northern Pacific Electro-Motive Division Type FP7A, numbered as Burlington Northern 9778, a Northern Pacific Type FP7B, numbered as 9765, and Burlington Northern 9804, a Type FP7A leading Train 25 at Homestake Pass, Montana, April 10, 1971.

Burlington Northern diesel locomotive 9802 at Tacoma, Washington, on July 20, 1970. Burlington Northern 9802, ex Northern Pacific, and Northern Pacific 6502C lead Burlington Northern train number 195 at Tacoma, Washington Union Station in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotives, passenger train

Northern Pacific Electro-Motive Division Type FP7A numbered as Burlington Northern 9810, and a Northern Pacific Type FP7B numbered as Burlington Northern 9817 on Train 29 at Bonner, Montana, September 6, 1970.

Northern Pacific Electro-Motive Division Type FP7A numbered as Burlington Northern 9826, Northern Pacific Type FP7B as Burlington Northern 9865, and Northern Pacific Type FP7A as Burlington Northern 9878 at Summit, Montana on Train 31, May 24, 1971.

Great Northern Electro-Motive Division Type SDP40 numbered as Burlington Northern 9850, Great Northern Type FP7Bs numbered as Burlington Northern 9727 and 9743 on Train 27 at Belton, Montana, May 17, 1970.

Great Northern Electro-Motive Division Type SDP40s numbered as Burlington Northern 9854 and 9853, approaching Flathead Tunnel, Montana, the first Train 27 to go through the tunnel, November 1, 1970.

Great Northern Electro-Motive Division Type SDP40s numbered as Burlington Northern 9854 and 9853, at Flathead Tunnel, Montana, the first Train 27 to go through the tunnel, November 1, 1970.

Great Northern Electro-Motive Division Type SDP40 numbered as Burlington Northern 9855 on Train 28 at Bonners Ferry, Idaho, October 31, 1970.

Great Northern Electro-Motive Division Type SDP45 numbered as Burlington Northern 9856, Great Nothern Type FP7B as Burlington Northern 9747, and Chicago, Burlington and Quincy Type GP20 as Burlington Northern 2061 at Whitefish, Montana, May 16, 1970.

Great Northern Electro-Motive Division Type SDP45 numbered as Burlington Northern 9860, Great Northern Type FP7B as Burlington Northern 9739 on Train 28 at Eureka, Montana, September 7, 1970.

Burlington Northern freight Train Number 121 in Devil's Canyon, west of Kahlotus, Washington, June 28, 1987.

A Burlington Northern EMD F45 diesel locomotive leads an eastbound freight at Indian Head near Kahlotus, Washington, undated.

Burlington Northern Diesel Locomotive, Type SW7 Number 116, NW2 501 and an unidentified assortment of Type GP and Type SW units at a diesel servicing facility in Kansas City, Missouri on June 20, 1980. Number 116 was built by Electro-Motive Division (EMD) in May, 1950 as Chicago, Burlington and Quincy Number 9250, Builder Number 8494. It was retired in October, 1985. Number 501 was built by Electro-Motive Division (EMD) 05/40 as Chicago, Burlington and Quincy Number 9204, Builder Number 1009. It was retired in July, 1982 Photo by Al Christianson.

Burlington Northern GP5 Number 1355, former Great Northern Number 905; 3 unidentified F units in Fergus Falls, Minnesota on September 20, 1980. Photo by Al Christianson.

Burlington Northern GP5 Number 1355, two unidentified FB locomotives and an unidentified FA locomotive cross the Otter Tail river on a plate girder bridge at Fergus Falls, Minnesota on September 20, 1980. Photo by Al Christianson.

Burlington Northern GP5 Number 1355, F7B Number 717, F7B Number 645 and an unidentified F9A leading covered hoppers at Fergus Falls, Minnesota on September 20, 1980. The F9A can be identified by five sets of split louvers on the side of the engine compartment. Photo by Al Christianson.

Burlington Northern GP5 Number 1355, former Great Northern Number 905; F7B Number 717, former Northern Pacific Number 6009B; F7B Number 645, former Great Northern Number 314B; F7A number unknown; with freight in Fergus Falls, Minnesota on September 20, 1980. Photo by Al Christianson.

Burlington Northern GP5 Number 1355, former Great Northern Number 905; F7B Number 717, former Northern Pacific Number 6009B; F7B Number 645, former Great Northern Number 314B; F7A number unknown; with freight in Fergus Falls, Minnesota on September 20, 1980. Photo by Al Christianson.

Burlington Northern Diesel Locomotive, Type SW7 Number 138 and, Type SW7 Number 141 shoving freight cars at Saint Paul, Minnesota on April 8, 1979. Number 138 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 166, Builder Number 9572. It was retired in May, 1982. Number 141 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 169, Builder Number 9575. It was retired in October, 1985. Photo by Al Christianson.

Burlington Northern Diesel Locomotive, Type SW7 Number 138 and, Type SW7 Number 141 at Saint Paul, Minnesota on April 8, 1979. Number 138 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 166, Builder Number 9572. It was retired in May, 1982. Number 141 was built by Electro-Motive Division (EMD) in March, 1950 as Great Northern Number 169, Builder Number 9575. It was retired in October, 1985. Photo by Al Christianson.

Burlington Northern GP10 Number 1403 and two unidentified GP locomotives lead a manifest on March 22, 1981. Photo by Al Christianson.

Burlington Northern GP10 Number 1403, GP38-2 Number 2094 and an unidentifed GP20 lead a manifest on March 22, 1981. Photo by Al Christianson.

Burlington Northern GP10 Number 1403, former Burlington Northern Number 1546 rebuilt July 1974 from former Great Northern GP7 Number 646; GP38-2 Number 2094, built November 1974; GP20 Number 2001, former Great Northern Number 2001; with westbound freight at Coon Rapids, Minnesota on March 22, 1981. Photo by Al Christianson.

Burlington Northern GP10 Number 1403, former Burlington Northern Number 1546 rebuilt July 1974 from former Great Northern GP7 Number 646; GP38-2 Number 2094, built November 1974; GP20 Number 2001, former Great Northern Number 2001; with westbound freight at Coon Rapids, Minnesota on March 22, 1981. Photo by Al Christianson.

Burlington Northern GP10 Number 1406 and GP20 Number 2035 lead a manifest by the station at Fargo, North Dakota on April 17, 1981. Photo by Al Christianson.

Burlington Northern GP10 Number 1406, former Burlington Northern Number 1506 rebuilt July 1975 from former Great Northern GP7 Number 606; GP20 Number 2035, former Great Northern Number 2035; with westbound freight passing the former Northern Pacific depot at Fargo, North Dakota on April 17, 1981. Photo by Al Christianson.