Thanks for the help. She isn't in Find a Grave, but it seems likely that she's buried next to Hiram. The online newspapers don't go that far either, but I'll see if there's anything online. I'm pretty sure the museum would be shut down for the winter. Although I couldn't quite find 515 4th Street in Ouray, I recommend looking at the neighborhood in Street View. If you look up and down the street, you can check out the view that Mary and Hiram would have seen.