Great Northern Diesel Locomotive 2020 at Chicago, Illinois on May 30, 1970. The photograph shows an Electro-Motive Division Type GP-20, Great Northern Class GP-20. The locomotive is painted in the original green and orange scheme. A crew member is visible at the rear of the locomotive. Other subject classes: Locomotive-Diesel, People-Railroad Crew

Chicago Transit Authority elevated streetcar approaching a station platform on the "A LAKE" line at Chicago, Illinois in 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Two Chicago Transit Authority elevated trains pictured from the platform level in Chicago, Illinois on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Chicago Transit Authority elevated streetcar stops at a station for waiting passengers which include Jim Fredrickson's scout troop at Chicago, Illinois on July 13, 1964. Photo by J.M. Fredrickson. Other Subject Classes: streetcar

Chicago Rail Link Electro-Motive Division (EMD) GP7 diesel locomotive number 4 (built in 1952 for the Pennsylvania) at Chicago, Illinois, on July 25, 1986. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Chicago Northwestern GP9 diesel locomotive number 4324 with a commuter car at Chicago, Illinois, on May 2, 1989. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, commuter train

Chicago and Northeastern Railroad steam locomotive number 1 at Chicago, Illinois, circa 1910. Chicago & North Eastern 1, formerly Northern Pacific number 885 class C-13, 4-4-0, built by Portland, 1881. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster shot

Burlington Northern diesel locomotive 9993, formerly Chicago, Burlington and Quincy 9993, at Chicago, Illinois, on August 28, 1972. Number 9993 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 19632. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 9993, formerly Chicago, Burlington and Quincy 9993, at Chicago, Illinois, on August 28, 1972. Number 9993 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 19632. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Burlington Northern diesel locomotive 9993, formerly Chicago, Burlington and Quincy 9993, at Chicago, Illinois, on August 28, 1972. Number 9993 is an E9A built by General Motors Electro Motive Division (EMD), builder's number 19632. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.