Operation Mercury
From Author Wars - https://authorwars.com/books/operation-mercury-70696.html
Overview:
- Title: Operation Mercury
- Author: Clifford D. Simak
- Year: 1941
- Type: Short Fiction
Editions/Publications:
- Unknown. Adventures in the Far Future / Tales of Outer Space (Unknown, Clifford D. Simak, Ace Books, $0.35, 177+140 pages, dos, Omnibus)