I found this photo at My link page Fallen Flags.Org to the right of Your computer screen.

Seen here is Chicago & NorthWestern Railroad EMD GP-30 roadswitcher locomotive # 822.
The photo is listed as being taken at Chicago Illinois in the year of 1977.

Conrail was only a year old at the time of this photo. Several locomotives from Conrail and the predecessor railroads that became Conrail in 1976, are viewed surrounding C & N,W # 822 at a local railroad locomotive terminal around Chicago.