The Gray Creatures

From Author Wars - https://authorwars.com/books/the-gray-creatures-1253997.html

Overview:

Title: The Gray Creatures
Author: Zorro
Year: 1966
Type: Novels

Editions/Publications:

Unknown. The Gray Creatures (Unknown, Zorro, Corinth Publications, $0.60, 158+[1] pages, Paperback, Novel)
2013 . The Gray Creatures (2013, Zorro, RadioArchives.com, $17.99, digital audio download, Novel)