Burlington Northern diesel locomotive 753, formerly Northern Pacific 6019B, at Auburn, Washington, on May 19, 1971. Number 753 is an F7B built by General Motors Electro Motive Division (EMD), builder's number 15676. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 752, formerly Northern Pacific 6019A, at Auburn, Washington, circa 1971. Number 752 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 15672. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 752, formerly Northern Pacific 6019A, at Auburn, Washington in 1971. Number 752 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 15672. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 748, formerly Northern Pacific 6018A, at Auburn, Washington, on April 01, 1971. Number 748 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 14262. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 745, formerly Northern Pacific 6017B, at Auburn, Washington, on March 01, 1971. Number 745 is an F7B built by General Motors Electro Motive Division (EMD), builder's number 14272. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 744 at Auburn, Washington, on March 01, 1971. Number 744 is an F7A and is shown with RS-3 number 4069 and GP9 number 1781. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, snow and ice.

Burlington Northern diesel locomotive 744 at Auburn, Washington, on March 01, 1971. Numbers 744, 4069, 1781 and 668 lead a freight train. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, snow and ice.

Burlington Northern diesel locomotive 744, formerly Northern Pacific 6017A, at Auburn, Washington, on March 01, 1971. Number 744 is an F7A built by General Motors Electro Motive Division (EMD), builder's number 14260. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 744 at Auburn, Washington, on March 01, 1971. Number 744 leads train number 139, Seattle to Stockton, California time freight at Stuck River Bridge, Auburn. The train operated via Vancouver, Washington, Wishram, Washington and Bieber, California. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, truss bridge.

Burlington Northern diesel locomotive 743, formerly Northern Pacific 6016C, at Auburn, Washington, circa 1971. Number 743 is an F7B built by General Motors Electro Motive Division (EMD), builder's number 14271. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.