|Jack Delano LC-DIG-fsa-8d24441|
Freight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The train crew watch all towers for any signals or special instructions
|1939 Aerial Photo from ILHAP|
Update: Even though the Library of Congress title indicates this picture is in Cortland, IL, Jon Roma explains that it is also the HM Tower. It looks toward the west. "The Elmhurst passenger station shelters are visible. The location is known as CP [Control Point] Park today under Union Pacific."
|Jack Delano LC-DIG-fsa-8d24428|
In Elmhurst, IL HM Interlocking (renamed "Park" after the UP takeover) is where the (then) double-track main east of Elmhurst/leads to Proviso Yard meet the three-track main west from Elmhurst. THE B&W view looks east. The color photo is from the 1950s and looks west.
Eric Berg posted
Dennis DeBruler North American Interlockings has another photo. Look at all of the signalling pipelines.