The World Must Never Know

From Author Wars - https://authorwars.com/books/the-world-must-never-know-960384.html

Overview:

Title: The World Must Never Know
Author: Jack Gaughan
Year: 1965
Type: Interior Art

Editions/Publications:

Unknown. The Ship That Sailed the Time Stream / Stranger Than You Think (Unknown, Jack Gaughan, Ace Books, $0.45, 167+87 pages, dos, Omnibus)