One of Our Asteroids Is Missing

From Author Wars - https://authorwars.com/books/one-of-our-asteroids-is-missing-1784078.html

Overview:

Title: One of Our Asteroids Is Missing
Author: Ed Emshwiller
Year: 1964
Type: Cover Art

Variant Titles:

2017. Robert Silverberg: The Ace Years, Part Two

Editions/Publications:

Unknown. The Twisted Men / One of Our Asteroids Is Missing (Unknown, Ed Emshwiller, Ace Books, $0.40, 130+124 pages, dos, Omnibus)