The old shops are gone, you can still see the foundations on Google Earth at
https://goo.gl/maps/BQFNq

It looks like there may have been a turntable just to the south of the main building.

Also, the shops can be seen in an old postcard on the Wikipedia page for the Alton Railroad at
http://en.wikipedia.org/wiki/Alton_Railroad

There is no good street view of the site, the road stubs leading into the site all have the same sign: No Dumping.

"I said, let me tell you, peoples
What the C&A will do for you
Well, now she will take yo' little woman
Then will holler back at you..."

From The C&A Blues, by Peetie Wheatland, circa 1930

I like the graffiti on the side of the train. People were doing that even back then. Interesting.

[The chalk markings are from the yard crews, noting such things as routing, special content advisories, repairs required, etc. Often seen on rail yard photos here on Shorpy. -tterrace]