Wreck was on a logging spur you are familiar with called the Curry line, built by the Baker White Pine Lumber Company in the very early 1920's to access timber sales in the China Creek area(later operated by the Stoddard Lumber Company), which branched off the Sumpter Valley Railway at the town of Curry, now located at the bottom of Phillips reservoir. Found broken rail, brake rods, brake shoes, truck springs, coupler parts, etc. Haven't found any lids with the original RR marked on them like your UN lid, but I keep hoping! I got a little exited about the C&S cast into the big one, but I'm not even sure if it's a journal lid, let alone what the C&S could stand for. I don't think there were any Colorado and Southern locomotives on the Sumpter Valley, especially up in the mtns, but what do I know? Brian