Here are several images made while spending some time in Joliet back in the mid-1970s. All of these trains are either northbound on the Alton or eastbound on the ATSF, clattering over the Rock Island diamonds, headed toward Chicago. These images are not great, but it’s always good to see action under the semaphores.
The first photograph has a northbound Amtrak train—most likely the State House, arriving on the Alton (GM&O). The second and third pictures show a Santa Fe manifest blasting through with six units, the first three being what looks like big General Electric U36Cs. And the final image provides a local job, with a couple of diminutive EMD GP20s up front. Now why couldn't that 2nd unit been up front?
Four images by Richard Koenig; taken September 20th 1975.