I know this is a first post, but I actually joined to add a few notes here. I'm VoodooKitty, and happen to be a pretty experienced Urban Archaeologist (I see that as a bit of a step above an explorer, due to my historical knowledge).
When it comes to Tuberculosis hospitals in general (whether sanitoriums or just hospitals) there is something to keep in mind during your explorations. It is very likely that people will be a bit "touchy" about your exploration should you be caught. More so than with other explorations, this type of hospital has a chance to bring arrest faster than others. The reason for this deals with the history of the hospitals.
Up until about the mid 1960's, doctors didn't really know a great deal about how Tuberculosis was transmitted from person to person. As a result of this, they placed very stringent guidelines on how people suffering from the disease were to be treated. Furthermore, they placed specific guidelines on how the remains of deceased victims were to be handled. Back in the day, when such hospitals were quite common (With Waverly being the largest) people who were sent there knew that it was a place they would never return from. This does not refer just to the fact that at the time there was no effective treatment for the illness; and that it would ultimately result in death, but to the way the bodies were handled.
Referring to the old guidelines, the process of dealing with the bodies was very...shall we say archaic? Even by contemporary standards. Once a person had passed from the illness, their body was not given an autopsy. In fact, standard procedure was to only preform autopsies on those where it was thought the illness had played no factor in their death. Instead, within minutes of death (sometimes while the body was still warm and rigor had not set in) the deceased would be taken down into the basement or an adjacent building of the hospital. Along with them, all possessions in the room, mattresses, clothing, and sheets were taken as well. It was in this room then that the body and all that had come with it would be incinerated.
Note I say "Incinerated" and not cremated. There is a distinct difference here, since it was very rare (in fact unheard of) that families would be given the ashes of the deceased persons. In smaller hospitals, the incinerator used was the same one that daily trash would be burned in. At the end of a week or so of burning, the ashes would be removed; blessed, and then buried on the hospital grounds. Families would be given a headstone to mark their loved one's passing, but were not allowed to claim the body. (Not that it mattered as by the time they were notified there was no body) In larger places, like Waverly, there may be a whole incineration building dedicated to the destruction of bodies and hospital wastes. Sometimes, to ease the pain on loved ones, the hospital called this location the "Crematorium" (As was the case in Waverly) but as before guidelines prevented release of the ashes to the families.
Around the mid 1960's, as more understanding of the disease came, this archaic practice was abandoned. However, the problem for many Urban Archaeologists and Explorers, is the fact that there is always a chance in the incineration plants and incinerators themselves, that human remains still linger. If this is widely known by the public to exist, then law enforcement tend to take a more serious look on explorers, as it is often felt they are exploring a mass grave.
I have much more historical background on locations, and will post it as I see fit. I hope this helps and informs future explorers, as well as prevents any future troubles which could potentially arise.