I found a harness this past week when I was climbing down in Red Rock,NV. Found on 10/19 or so. Left a note on the campground board without response thus far.
Seems that it flew out of/off of someone's car as they left the campground.
Give a shout if you think it's yours. If you can describe it (brand, style, size...) I'll ship it to you. If you know anyone who has been there recently please spread the word. This has also been posted on supertopo.