Just a note about the Myrtles, since I've said it before in my post #40, most of what is purported to have happened there never did occur. To repeat, only one man was murdered on the premises, there was no Chloe, or slave shack for that matter (which if GH really researched, they would have found it to be a small house built for the owners children), and nobody was poisoned. The wife died of yellow fever and the children died at least a year later. Hannah has summed it up very well in post #45.
According to an article I read, the piano does sometimes play on its own and a woman in a bonnet is sometimes seen. For quantity of possible hauntings, Myrtles slides down the scale quite a bit. And that famous picture of Chloe? There was a website that debunked it very well, though I would have to search for a while to find it. In some photos "Chloe" looks a bit like a shrub, actually.
Those running the Myrtles are not likely to discourage these stories since it does bring in the tourists.
About the Spalding–the less said the better. We already had a go round several months ago about that one so no need to rehash it here.