I believe the first one to be correct. It matches the No-Ketchum Pond on the AMC map. When you are at Perkins Notch shelter there is a very short spur path to the pond. It is pretty much on the trail.
ETA: I just dug out my NH Atlas...confirm that I disagree with their labelling. I seem to recall the WR Trail passing right by the second (loer) pond as well, though.