Correct on the Captain Thomas Smith caches.
Starting from the first, each cache held the lat/long of the next piece to find. 5 total parts to find. I found the first 4. All the caches were spread in a rough arc appox. 600-900 feet apart along the trail. I'm going to make a return trip this week to waypoint all first 4 locations.
But once I have those first 4 lats/longs, what then??? The last one I found (4 of 5) tells me to triangulate the first 4 locations to find the final part.
I'll email the cache owner for a little nudge also.