Masters of the Maze

From Author Wars - https://authorwars.com/publications/masters-of-the-maze-239093.html

Overview:

Title: Masters of the Maze
Author: Avram Davidson
Year: 1976
Publisher: Manor Books
Price: $1.25
Pages: 156
Binding: Paperback
Type: Novel
Title Reference: Masters of the Maze
Notes:
- "A Manor Book ..... 1976"
- Printing not stated, no number line
- The artist is not credited, no visible signature
- Artwork used again here and here
- 12439 on the cover, 532*12439*4 on spine but adding the leading '0' gives a bad checksum