The Not-Men

From Author Wars - https://authorwars.com/publications/the-not-men-201997.html

Overview:

Title: The Not-Men
Author: Jack Williamson
Year: 1968
Publisher: Tower Books
Price: $0.60
Pages: 222
Binding: Paperback
Type: Novel
Title Reference: The Not-Men
Notes:
• "Second Tower Printing 1968"; no number line • First and only printing with this title. • The artist is not credited, no visible signature on the artwork • Printed in the US