The Threshold
From Author Wars - https://authorwars.com/publications/the-threshold-48549.html
Overview:
- Title: The Threshold
- Author: Marlys Millhiser
- Year: 1985
- ISBN-10: 0449207056
- Publisher: Fawcett Crest / Ballantine
- Price: $3.95
- Pages: 340
- Binding: Paperback
- Type: Novel
- Title Reference: The Threshold
- Notes: Stated 1st printing. Cover signed "R.McQ." so probably by Ralph McQuarrie.