This cover art is apparently titled “A Settlement Out of Court”
Includes Lastborn, Thing of Beauty, From an Unseen Censor, For Your Information: The Last of the Moas, On the Double, The Stroke of the Sun, and Personnel Problem
This wrap-around cover features top sci-fi pulp authors of 1952. The identification guide from the inside front cover is courtesy of Lothar Schenk.
Throughout the 50’s Galaxy Science Fiction printed Christmas covers with a four-armed Santa, done by Ed “Emsh” Emshwiller
Also, Age Of The Pussyfoot