Astounding Science Fiction Vol 22 No 3, November 1938
The cover artwork by H.W. Brown.
The novelette 'Reunion on Ganymede' was written by Clifford D. Simak.
There are also short stories written Harl Vincent, L. Ron Hubbard and Nat Schachner.
Astounding Science Fiction Vol 22 No 4, December 1938
The cover art by Schneeman.
The cover short story 'The Merman' was written by L. Sprague de Camp.
Astounding Science Fiction Vol 22 No 6, February 1939
The cover art by Rogers.
The cover novellete 'Crucible of Power' was written by Jack Williamson
by caspi