Speculation in 1988

The Lost Teachings of Jesus, Book 1: Missing Texts - Karma and Reincarnation by Prophet, Mark L., Prophet, Elizabeth Clare

Lost Cities of Ancient Lemuria and the Pacific by Childress, David Hatcher

Blunder Book: Gigantic by Goldberg, M. H.

Surfers of the Zuvuya: Tales of Interdimensional Travel by Argüelles, José