The Time Vault: The Face in the Mask

From Author Wars - https://authorwars.com/books/the-time-vault-the-face-in-the-mask-1921887.html

Overview:

Title: The Time Vault: The Face in the Mask
Author: uncredited
Year: 1976
Type: Essays

Editions/Publications:

Unknown. The Man with Two Faces (Unknown, uncredited, Ace Books, $1.25, 196 pages, Paperback, MAGAZINE)