Night of Masks

From Author Wars - https://authorwars.com/publications/night-of-masks-259086.html

Overview:

Title: Night of Masks
Author: Andre Norton
Year: 1973
Publisher: Ace Books
Price: $0.95
Pages: 191
Binding: Paperback
Type: Novel
Title Reference: Night of Masks
Notes:
• "Third Ace printing: September, 1973"; no number line
• Referenced in bibliography by Helen-Jo Jakusz Hewitt published in 1975 publication "The Book of Andre Norton".
• The artist is not credited, initials JW are on the cover