Agent of the Unknown
From Author Wars - https://authorwars.com/books/agent-of-the-unknown-988611.html
Overview:
- Title: Agent of the Unknown
- Author: Ed Valigursky
- Year: 1956
- Type: Cover Art
Editions/Publications:
- Unknown. The World Jones Made / Agent of the Unknown (Unknown, Ed Valigursky, Ace Books, $0.35, 192+128 pages, dos, Omnibus)
- 2009 . Agent of the Unknown (2009, Ed Valigursky, Wildside Press, ISBN-10: 9781434458643, $9.99, 132 pages, Trade Paperback, Novel)