For people interested in this type of stuff. Here is a link.
http://www.prairieghosts.com/waverly_tb.html
There is a photo that shows what looks like a light bulb lit up in it. There hasn't been electricty in the building in a dickyear.
I've been to this place many many times and only once did I think I saw something. There are tons of stories about it though. A buddy that used to work there has some pretty crazy ones and he's not the type to BS.