Burlington Northern Diesel Locomotives 780 with freight train at Fergus Falls, Minnesota on June 6, 1981. Number 780 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 6500C. Photo by A.L. Christianson

Burlington Northern Diesel Locomotive 786 with freight train at Fergus Falls, Minnesota on September 20, 1980. Number 786 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7013A. Photo by A.L. Christianson

Burlington Northern Diesel Locomotives 780, 783 and 768 with freight train at Fergus Falls, Minnesota on June 6, 1981. Number 780 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 6500C. Number 783 is an F9B built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7010B. Number 768 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7007A. Photo by A.L. Christianson

Burlington Northern Diesel Locomotives 786, 717 and 645 with freight train at Fergus Falls, Minnesota on September 20, 1980. Number 786 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7013A. Number 717 is an F7B built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 6008C. Number 645 is an F7B built by General Motors Electro Motive Division (EMD), formerly Great Northern number 314B. Photo by A.L. Christianson

Burlington Northern Diesel Locomotives 786, 717 and 645 with freight train at Fergus Falls, Minnesota on September 20, 1980. Number 786 is an F9A built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 7013A. Number 717 is an F7B built by General Motors Electro Motive Division (EMD), formerly Northern Pacific number 6008C. Number 645 is an F7B built by General Motors Electro Motive Division (EMD), formerly Great Northern number 314B. Photo by A.L. 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, 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 SD40-2 Number 6917, built November 1973; SD40-2 Number 6918, built November 1973; two SD40-2, numbers unknown; near Fergus Falls, Minnesota with open hoppers on December 25, 1981. Photo by Al Christianson.