Earth's Last Citadel

From Author Wars - https://authorwars.com/publications/earths-last-citadel-11793.html

Overview:

Title: Earth's Last Citadel
Author: C. L. Moore, Henry Kuttner
Year: 1977
ISBN-10: 0441181112
Publisher: Ace Books
Price: $1.50
Pages: 146
Binding: Paperback
Type: Novel
Title Reference: Earth's Last Citadel
Notes:
No publication date stated, date (1977-04-00) taken from Locus #201 (May 1977). Cover is credited to the Brothers Hildebrandt in Future #7, January 1979.