Here's a heart breaker and an encouragement, too...I live in the mountains (Blue Ridge) of Virginia, that was mostly settled by the Scots-Irish who brought their farm collies with them, as you all are very aware. It occurred to me that the old farmers around here might remember the dogs and maybe know of anyone who might still have one. So I asked the community patriarch (sitting in his usual spot at the local gas station/village mart) about it, and he did indeed remember the type. He didn't rightly know if anyone had one now, but he said one got dumped (!) here a little while ago and it hung around a little until it disappeared. He didn't know what happened to it.
I'll talk to the local dog catcher. You never know...
 
Rini