The Forgotten Door

From Author Wars - https://authorwars.com/publications/the-forgotten-door-40099.html

Overview:

Title: The Forgotten Door
Author: Alexander Key
Year: 1989
ISBN-10: 0590431307
Publisher: Apple / Scholastic
Price: $4.50
Pages: 140
Binding: Trade Paperback
Type: Novel
Title Reference: The Forgotten Door
Notes: Unknown