The kits were indeed placed by RevBaron, aka Chuck, when he lived in Loveland. I rode with him and checked them once. They were all buried, so we dug them out some and reset the ribbon. At least two of them were NOT at warming huts, but at cabins in the middle of nowhere, one south of Libby Flats, and one up by Sand Lake IIRC.
Chuck moved back to Michigan probably 5 or 6 years ago... He's been out riding a couple times since, but I have been trying to get hold of him this year to come out riding with us in Alpine and have thus far not heard from him. I wonder if he's not riding anymore...
Nobody picked up leaving the kits after he left as far as I know.