There’s a book that I got some time around 1993. It’s a light-hearted ghost themed activity/picture book. One important detail is that there were hidden messages in the book that one could read via the included red decoder that you’d hold up to your eye. It was essentially a red translucent film.
The book was mostly illustrations, maybe with some jokes and mazes thrown in.
The book MAY be a Disney publication as I associate it with Disney. But, as my brother pointed out, that might be because I had the book with me while we were on our trip to Disney in the early 90s. Still, it’s also possible that we got the book while at Disney World.