Here is a shot of a D&H train led by #7312 with six other engines in various paint schemes crossing the bridge in Glenville, NY on July 28, 1991. Mohawk Yard is just to the right of the train, and Schenectady and the old Alco plant is just on the left.
Compare this shot with the one I posted here. Same bridge... same perspective... same excessive numbers and paint schemes on the locomotives. The only thing that changed was the owner / operator of the line.