Doug I don't believe the Deadwood was rail served, to me it looks like wagons only. For the model I am adding a rail spur in front of the lower main building using the pair of doors/openings on that wall, with the siding below the floor level of the building. I am planning on using a retaining wall between the track and the floor level, originally was going to use stone but I have been thinking maybe wood would also work. As for plans for the Deadwood I do not know of any, I am using the single photo and scaling the buildings directly onto my jigs.
I am very impressed with your work.
Matt