Adventures on Other Planets

From Author Wars - https://authorwars.com/publications/adventures-on-other-planets-505361.html

Overview:

Title: Adventures on Other Planets
Author: Donald A. Wollheim
Year: 1961
Publisher: Ace Books
Price: $0.35
Pages: 160
Binding: Paperback
Type: Anthology
Title Reference: Adventures on Other Planets
Notes: States "Second Printing 1961"
There is another entry that has a Transient Primary Verification that claims to be a third printing in the same year that may be either correct or a mistake.
Same cover art as earlier printing.