Wow, you were right, Murray.
MANY thanks for all the leads, everyone.
Kenny, I HAVE a map... just haven't used it yet. ;-) Gonna. Soon. I was going by the write-up on the place where I'm staying... not right in Arrochar, but 2 miles from that train station, I think. (I'm glad Garelochhead is 4-5, not 94-5 miles away!)
Again, thanks to you all. If you ever get to Texas, I'll hook y'all up to some fine Texas Two-Steppin' music (or, even better, some small folk venues).