I found a few links last night that might help you. I was looking for the same info. The first is a stocking location areas map. The map has number on it. Pick the one for the area you are wanting. It will open a PDF file and show the locations on each stream where the stock. I will tell you that 27 on this map is for Little River, 28 is the Middle Prong Pigeon River above highway 321 right at Greenbrier, and 12 is Cosby Creek starting where it goes into the park.
This one is a location and date chart of the streams being stocked. It also is a PDF file.