I realize this is an old post but I wanted to add to the post.
The sanatorium was taken over by the prison system in 83, they closed it due to budget cuts in 2010. The original main building is still standing and in excellent condition but as it is owned by the prison system, it is off limits to the public and behind barbed wire fencing. The prison system is unsure at this point what they will do with it. I am trying to get a petition together to put it on the national register of historic places.
I was able to find out that all of the old records have ben destroyed. I am checking with some local historic societies and residents to see if anyone has anything pertaining to it. If you'd like I can keep you posted on any developments. Also, I have several photos and brief histories
My Great Grandmother died there in 1938.