Product Overview
Mysteries of the Unknown is a series of books about the paranormal, published by Time-Life Books from 1987 through 1991. Each book focused on a different topic, such as ghosts, UFOs, psychic powers and dreams. The series was very successful for Time-Life Books. Within 15 months of the series' release, it had broken every sales record for the company.[1]This particular one is Earth Energies.
