Siege of the Unseen
From Author Wars - https://authorwars.com/books/siege-of-the-unseen-1033148.html
Overview:
- Title: Siege of the Unseen
- Author: Ed Valigursky
- Year: 1959
- Type: Cover Art
Editions/Publications:
- Unknown. Siege of the Unseen / The World Swappers (Unknown, Ed Valigursky, Ace Books, $0.35, 103+153 pages, dos, Omnibus)