I'm looking for a book I used to read when I was a kid, but I don't remember what it was called?

It had a black cover with a winged monster on it. The monster was greenish in color and reminded me of maybe a devil. It had everything in it from vampires,Lochness monster,big foot, werewolves, fairies,cannibals, ect... My uncle gave it to me around 1980. The title was something like " unexplained mysteries" or " mysteries and monsters " something like that.. It was not a story book, it was more like a investigation book trying to solve the legends in the book..