Caboose 0517 is at, and has been at, South Park City.
#0585 was from the closed RV park outside of town. I used to sit near the entrance of South Park City and like Bill said, was the Chamber of Commerce "office". There was no reason to replace it.
The 0585 body was used as a play house in Alamosa before going to the Fairplay RV Park in the mid 70's. The park also had two stock cars. One (I think) went to South Park City. The other one....I don't know. And like Tom said, the "depot" was moved into the town of Fairplay. It's been used an several businesses over the years. The original Fairplay depot is still in town and is used as a house.
Jerry