I definitely read this in elementary school at some point! I stumbled on a copy at a garage sale in my home town that was withdrawn from the local library and presumably bought at a book sale. My copy is from 1965!
The illustrations are completely adorable, and the stories refreshingly new — yes, I’d seen pictures of the Brown Lady, but hadn’t heard the music teacher’s ghostly tale. The theories and stories about poltergeists were boringly familiar (I mean, I have read this before, I’m pretty sure) but there was an entirely refreshing theoretical section about the nature of time and space, and their dimensions, etc. The author was obviously well-researched and credits some paranormal researchers affiliated with institutions of learning in the forward. A lot of his information seems to come from the famed parapsychology lab at Duke University.
I’ll be keeping this copy for my daughter to read someday. It was so cool to imagine ghost hunts and research taking place in the ’50s-’60s with their limited technological equipment (like in The Conjuring) and none of the flashy ghost hunting TV show bull**** that invites people to try and fake results or wear too much Ed Hardy (yes Ghost Adventures I am calling you out).