Burlington Northern diesel locomotive 9975 at Chicago, Illinois, on August 28, 1972. This is a view of the Zephyr pit at Chicago. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger car.

Burlington Northern diesel locomotive 9975, formerly Chicago, Burlington and Quincy 9975, at Chicago, Illinois, on August 28, 1972. Number 9975 is an E8A built by General Motors Electro Motive Division (EMD), builder's number 18317. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9976, formerly Chicago, Burlington and Quincy 9976, at Chicago, Illinois, on August 28, 1972. Number 9976 is an E8A built by General Motors Electro Motive Division (EMD), builder's number 18318. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 9977, formerly Chicago, Burlington and Quincy 9977, at Chicago, Illinois, on August 28, 1972. Number 9977 is an E8A built by General Motors Electro Motive Division (EMD), builder's number 18319. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 9982, formerly Chicago, Burlington and Quincy 9987B, at Chicago, Illinois, on August 28, 1972. Number 9982 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 20538. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9984, formerly Chicago, Burlington and Quincy 9989B, at Chicago, Illinois, on August 28, 1972. Number 9984 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 20542. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9985, formerly Chicago, Burlington and Quincy 9985A, at Chicago, Illinois, on August 28, 1972. Number 9985 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 20533. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9985, formerly Chicago, Burlington and Quincy 9985A, at Chicago, Illinois, on August 28, 1972. Number 9985 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 20533. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9988, formerly Chicago, Burlington and Quincy 9988A, at Chicago, Illinois, on August 28, 1972. Number 9988 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 20539. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, locomotive facility.

Burlington Northern diesel locomotive 9992, formerly Chicago, Burlington and Quincy 9992, at Chicago, Illinois, on August 28, 1972. Number 9992 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 19631. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.