EJ&E West Chicago Yard

(Satellite) I zoomed in on the curve that Mark has in the foreground in the following photo. He was using a really long lens because the Illinois Prairie Path - Geneva Spur Bridge appears a lot closer than it really is.

Mark Llanuza posted
It's the year 2009 a short Frt train called 20 coming into West Chicago

Unlike most railyards today, this yard still has all of its classification tracks. 

Satellite

C&NW's original mainline that headed west towards Galena went along the south side of this EJ&E yard. As you can see in this topo map, that mainline continued southeast and crossed the EJ&E and Washington Street and then turned more East to go through town. That original mainline made it just to Freeport, IL, when C&NW decided to build a more direct mainline from West Chicago towards Omaha. The old mainline became the Freeport Division. It is now UP's Belvidere Subdivision. 

1953 West Chicago Quad @ 1:24,000

Note that a new C&NW wye was added west of the EJ&E route to connect the Belvidere/Freeport branch to the mainline and UP's West Chicago Yard with more gentle curves. But I was shocked to see that it still has the CB&Q connection in the lower-right corner to the C&NW route. That was removed decades ago. I fired up Google Earth and confirmed that the CB&Q connection is already gone in the oldest usable image, 1993. That image also shows that the new wye has been constructed and that the old mainline no longer crossed the EJ&E and Washington Street.

1998 West Chicago Quad @ 1:24,000

Looking at a satellite image, I noticed the 1998 topo map doesn't have the connection that has been added between UP going to the West and EJ&E going to the South. But that is not an error because, according to Google Earth, that connection still doesn't exist in 1998. Google Earth shows that that connection was built prior to Mar 2002.

Satellite

Looking again at the 1953 map, the junction of the CB&Q and EJ&E was JA Tower and the crossings of C&NW and EJ&E was JB (new mainline) and JC (old mainline).